U.S. patent application number 15/396221 was filed with the patent office on 2018-07-05 for lanthanide precursors and deposition of lanthanide-containing films using the same.
This patent application is currently assigned to L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude. The applicant listed for this patent is L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude. Invention is credited to Satoko GATINEAU, Jean-Marc GIRARD, Daehyeon KIM, Wontae NOH.
Application Number | 20180187303 15/396221 |
Document ID | / |
Family ID | 62709316 |
Filed Date | 2018-07-05 |
United States Patent
Application |
20180187303 |
Kind Code |
A1 |
GATINEAU; Satoko ; et
al. |
July 5, 2018 |
LANTHANIDE PRECURSORS AND DEPOSITION OF LANTHANIDE-CONTAINING FILMS
USING THE SAME
Abstract
Lanthanide-containing film forming compositions comprising
Lanthanide precursors having the general formulae: ##STR00001##
wherein Ln is a Lanthanide; A is independently N, Si, B, P or O;
each E is independently C, Si, B or P; m and n are independently 0,
1 or 2; m+n>1; each R is independently an H or a C.sub.1-C.sub.4
hydrocarbyl group; L is a -1 anionic ligand selected from the group
consisting of NR'.sub.2, OR', Cp, amidinate, .beta.-diketonate, or
keto-iminate, wherein R' is an H or a C.sub.1-C.sub.4 hydrocarbon
group; and L' is NR'' or O, wherein R'' is an H or a
C.sub.1-C.sub.4 hydrocarbon group. Also disclosed are methods of
synthesizing and using the disclosed precursors to deposit
Lanthanide-containing films on one or more substrates via vapor
deposition processes.
Inventors: |
GATINEAU; Satoko; (Seoul,
KR) ; KIM; Daehyeon; (Seoul, KR) ; NOH;
Wontae; (Seoul, KR) ; GIRARD; Jean-Marc;
(Versailles, FR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des
Procedes Georges Claude |
Paris |
|
FR |
|
|
Assignee: |
L'Air Liquide, Societe Anonyme pour
l'Etude et l'Exploitation des Procedes Georges Claude
Paris
FR
|
Family ID: |
62709316 |
Appl. No.: |
15/396221 |
Filed: |
December 30, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C23C 16/18 20130101;
C07F 5/00 20130101; C23C 16/45553 20130101 |
International
Class: |
C23C 16/18 20060101
C23C016/18; C07F 5/00 20060101 C07F005/00; C23C 16/455 20060101
C23C016/455 |
Claims
1. A composition comprising a Lanthanide precursor of the general
formulae:
L-Ln-C.sub.5R.sub.4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.4AR.sub.3-3-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.3(m-A.sub.2)R.sub.2-4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
referring to the following structure formula, respectively:
##STR00007## wherein Ln is selected from Lanthanide elements
consisting of La, Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er,
Tm, Yb and Lu bonded in an .eta..sup.5 bonding mode to the aromatic
group; A is independently N, Si, B, P or O; each E is independently
C, Si, B or P; m and n are independently 0, 1 or 2; m+n>1; each
R is independently an H or a C.sub.1-C.sub.4 hydrocarbyl group;
each L is independently a -1 anionic ligand; and each L' is
independently NR'' or O, wherein R'' is an H or a C1-C.sub.4
hydrocarbon group.
2. The composition of claim 1, wherein the -1 anionic ligand is
selected from the group consisting of NR'.sub.2, OR', Cp,
Amidinate, .beta.-diketonate, and keto-iminate, wherein R' is an H
or a C.sub.1-C.sub.4 hydrocarbon group.
3. The composition of claim 1, wherein the Lanthanide precursor is
selected from the group consisting of
(Me.sub.2N)-La-C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sup.2N)--Lu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
and
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--.
4. A method of forming a Lanthanide-containing film on a substrate,
the method comprising the steps of: introducing the Lanthanide
precursor of claim 1 into a reactor having a substrate disposed
therein; and depositing at least part of the Lanthanide precursor
onto the substrate to form the Lanthanide-containing film on the
substrate using a vapor deposition process.
5. The method of claim 4, further comprising introducing a reactant
species into the reactor.
6. The method of claim 5, wherein the reactant species is selected
from the group consisting of O.sub.2, O.sub.3, H.sub.2O,
H.sub.2O.sub.2, acetic acid, formalin, para-formaldehyde, and
combinations thereof.
7. The method of claim 6, wherein the reactant species is
ozone.
8. The method of claim 4, wherein the Lanthanide precursor is
selected from the group consisting of
(Me.sub.2N)-La-C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sup.2N)--Lu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)-,
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
and
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--.
9. The method of claim 6, wherein the Lanthanide-containing film is
selected from the group consisting of La.sub.2O.sub.3,
(LaLn)O.sub.3, La.sub.2O.sub.3--Ln.sub.2O.sub.3, LaSi.sub.xO.sub.y,
LaGe.sub.xO.sub.y, (Al, Ga, Mn)LnO.sub.3, HfLaO.sub.x, ZrLaO.sub.x,
LaSrCoO.sub.4, and LaSrMnO.sub.4, where Ln is a different
Lanthanide and x and y are each independently selected from a
number ranging from 1 to 5 inclusive.
10. The method of claim 4, further comprising introducing a
precursor into the reactor, wherein the precursor is different from
the Lanthanide precursor, and depositing at least part of the
precursor to form the Lanthanide-containing film on the
substrate.
11. The method of claim 10, wherein the precursor contains an
element selected from the group consisting of Hf, Si, Al, Ga, Mn,
Ti, Ta, Bi, Zr, Pb, Nb, Mg, Sr, Ba, Ca, and combinations
thereof.
12. The method of claim 4, wherein the deposition process is a
chemical vapor deposition process.
13. The method of claim 4, wherein the deposition process is an
atomic layer deposition process.
14. The method of claim 8, wherein the deposition process is an
atomic layer deposition process.
Description
TECHNICAL FIELD
[0001] Disclosed are lanthanide-containing film forming
compositions comprising Lanthanide precursors having the general
formulae,
L-Ln-C.sub.5R.sub.4-[ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.4AR.sub.3-3-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.3(m-A.sub.2)R.sub.2-4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic ring group; A is
independently N, Si, B, P or O; each E is independently C, Si, B or
P; m and n are independently 0, 1 or 2; m+n>1; each R is
independently an H or a C.sub.1-C.sub.4 hydrocarbyl group; adjacent
Rs may be joined to form a hydrocarbyl ring; L is a -1 anionic
ligand selected from the group consisting of NR'.sub.2, OR', Cp,
amidinate, .beta.-diketonate, or keto-iminate, wherein R' is an H
or a C.sub.1-C.sub.4 hydrocarbon group; adjacent R's may be joined
to form a hydrocarbyl ring; and L' is NR'' or O, wherein R is an H
or a C.sub.1-C.sub.4 hydrocarbon group. Also disclosed are methods
of synthesizing and using the disclosed precursors to deposit
Lanthanide-containing films on one or more substrates via vapor
deposition processes.
BACKGROUND
[0002] One of the challenges the industry faces is developing new
gate dielectric materials for Dynamic Random Access Memory (DRAM)
and capacitors. For decades, silicon dioxide (SiO.sub.2) was a
reliable dielectric, but as transistors have continued to shrink
and the technology moved from "Full Si" transistor to "Metal
Gate/High-k" transistors, the reliability of the SiO.sub.2-based
gate dielectric is reaching its physical limits. The need for new
high dielectric constant material and processes is increasing and
becoming more and more critical as the size for current technology
is shrinking. New generations of oxides especially based on
Lanthanide-containing materials are thought to give significant
advantages in capacitance compared to conventional dielectric
materials.
[0003] Nevertheless, deposition of Lanthanide-containing layers is
difficult and new material and processes are increasingly needed.
For instance, atomic layer deposition (ALD) has been identified as
an important thin film growth technique for microelectronics
manufacturing, relying on sequential and saturating surface
reactions of alternatively applied precursors, separated by inert
gas purging. The surface-controlled nature of ALD enables the
growth of thin films having high conformality and uniformity with
an accurate thickness control. The need to develop new ALD
processes for rare earth materials is obvious.
[0004] Unfortunately, the successful integration of compounds into
deposition processes has proven to be difficult. Three classes of
molecules are typically proposed in the case of Lanthanum:
beta-diketonates, bis(trimethylsilyl)amide and cyclopentadienyls.
The two first families of compounds are stable, but the melting
points may exceed 90.degree. C., making them impractical. Lanthanum
2,2-6,6-tetramethylheptanedionate's [La(tmhd).sub.3] melting point
is as high as 230.degree. C., and the Lanthanum
tris(bis(trimethylsilyl)amido) [La(tmsa).sub.3] melting point is
150.degree. C. Additionally, the delivery efficiency of those
precursors is very difficult to control. Non-substituted
cyclopentadienyl compounds also exhibit low volatility with a high
melting point. Molecule design may both help improve volatility and
reduce the melting point. However, in process conditions, these
classes of materials have been proven to have limited use. For
instance, La(iPrCp).sub.3 does not allow an ALD regime above
225.degree. C.
[0005] Commonly owned PCT Patent Application Publication No. WO
2009/149372 discloses rare earth metal precursors containing
cyclopentadienyl and amidinate ligands. However, the examples
reveal that synthesis of La(Etcp).sub.2(N.sup.iPr-amd),
La(Etcp)(N.sup.iPr-amd).sub.2, La(iPrCp).sub.2(N.sup.iPr-amd), and
La(iPrCp)(N.sup.iPr-amd).sub.2 failed.
[0006] Some Cp bridged Y and Lu compounds are synthesized and may
be used for catalysts or precursors for rare-earth oxide thin
films. For example, F Edelmann discloses the Cp-one ligand bridged
Y compound Me.sub.4Cp-SiMe.sub.2-N(ph)- Y-(F Edelmann, "Lanthanide
Aamidinates and guanidinates: from laboratory curiosities to
efficient homogeneous catalysts and precursors for rare-earth oxide
thin films", Chem. Soc. Rev., 2009, 38, p2253-2268). The web pages
of Japan RIKEN research institute
(www.riken,jp/lab-www/organometallidengliresearch_1_e.html)
disclose the synthesis of Me.sub.4Cp-SiMe.sub.2--N(Ar)--Lu-- for
use as organometallic catalysts.
[0007] Some of the Lanthanide precursors currently available
present many drawbacks when used in a deposition process.
Consequently, there exists a need for alternate precursors for
deposition of Lanthanide-containing films.
SUMMARY
[0008] Disclosed herein are Lanthanide-containing film forming
compositions comprising Lanthanide precursors having the general
formulae:
L-Ln-C.sub.5R.sub.4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.4AR.sub.3-3-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.3(m-A.sub.2)R.sub.2-4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']--
,
referring to the following structure formula, respectively:
##STR00002##
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic ring group; A is
independently N, Si, B, P or O; each E is independently C, Si, B or
P; m and n are independently 0, 1 or 2; m+n>1; each R is
independently an H or a C.sub.1-C.sub.4 hydrocarbyl group; adjacent
Rs may be joined to form a hydrocarbyl ring; L is a -1 anionic
ligand selected from the group consisting of NR'.sub.2, OR', Cp,
amidinate, .beta.-diketonate, or keto-iminate, wherein R' is an H
or a C.sub.1-C.sub.4. hydrocarbon group; adjacent R's may be joined
to form a hydrocarbyl ring; and L' is NR'' or O, wherein R' is an H
or a C.sub.1-C.sub.4 hydrocarbon group.
[0009] The disclosed Lanthanide-containing film forming
compositions may further include one or more of the following
aspects: [0010] Ln being La; [0011] Ln being Y; [0012] Ln being Sc;
[0013] Ln being Ce; [0014] Ln being Pr; [0015] Ln being Nd; [0016]
Ln being Sm; [0017] Ln being Eu; [0018] Ln being Gd; [0019] Ln
being Tb; [0020] Ln being Dy; [0021] Ln being Ho; [0022] Ln being
Er; [0023] Ln being Tm; [0024] Ln being Yb; [0025] Ln being Lu
[0026] Each A being N, Si, B, P or O; [0027] A being N; [0028] A
being Si; [0029] A being B; [0030] A being P; [0031] A being O;
[0032] Each E being C, Si, B or P; [0033] E being C; [0034] E being
Si; [0035] E being B; [0036] E being P; [0037] m being 0, 1, or 2;
[0038] m being 0; [0039] m being 1; [0040] m being 2; [0041] n
being 0, 1, or 2; [0042] n being 0; [0043] n being 1; [0044] n
being 2; [0045] m+n being >1; [0046] m being 1 and n being 1;
[0047] m being 2 and n being 1; [0048] Each R independently being
H, Me, Et, .sup.nPr, .sup.iPr, .sup.nBu, .sup.sBu, .sup.iBu, or
.sup.tBu; [0049] R being H; [0050] R being Me; [0051] R being Et;
[0052] R being .sup.nPr; [0053] R being .sup.iPr; [0054] R being
.sup.nBu; [0055] R being .sup.iBu; [0056] R being .sup.sBu; [0057]
R being .sup.tBu; [0058] L being NH.sub.2; [0059] L being
NMe.sub.2; [0060] L being NEt.sub.2 [0061] L being N.sup.nPr.sub.2;
[0062] L being N.sup.iPr.sub.2; [0063] L being N.sup.nBu.sub.2;
[0064] L being N.sup.iBu.sub.2; [0065] L being N.sup.sBu.sub.2;
[0066] L being N.sup.tBu.sub.2; [0067] L being NHMe; [0068] L being
NHEt; [0069] L being NH.sup.nPr; [0070] L being NH.sup.iPr; [0071]
L being NH.sup.nBu; [0072] L being NH.sup.iBu; [0073] L being
NH.sup.sBu; [0074] L being NH.sup.tBu; [0075] L being NMeEt; [0076]
L being NMe.sup.nPr; [0077] L being NMe.sup.iPr; [0078] L being
NMe.sup.nBu; [0079] L being NMe.sup.iBu; [0080] L being
NMe.sup.sBu; [0081] L being NMe.sup.tBu; [0082] L being
NEt.sup.nPr; [0083] L being NEt.sup.iPr; [0084] L being
NEt.sup.nBu; [0085] L being NEt.sup.iBu; [0086] L being
NEt.sup.sBu; [0087] L being NEt.sup.tBu; [0088] L being
N.sup.nPr.sup.iPr; [0089] L being N.sup.nPr.sup.nBu; [0090] L being
N.sup.nPr.sup.iBu; [0091] L being N.sup.nPr.sup.sBu; [0092] L being
N.sup.nPr.sup.tBu; [0093] L being N.sup.iPr.sup.nBu; [0094] L being
N.sup.iPr.sup.iBu; [0095] L being N.sup.iPr.sup.sBu; [0096] L being
N.sup.iPr.sup.tBu; [0097] L being N.sup.nBu.sup.iBu; [0098] L being
N.sup.nBu.sup.sBu; [0099] L being N.sup.nBu.sup.tBu; [0100] L being
N.sup.iBu.sup.sBu; [0101] L being N.sup.iBu.sup.tBu; [0102] L being
N.sup.sBu.sup.tBu; [0103] L being OH; [0104] L being OMe; [0105] L
being OEt; [0106] L being O.sup.nPr; [0107] L being O.sup.iPr;
[0108] L being O.sup.nBu; [0109] L being O.sup.iBu; [0110] L being
O.sup.sBu; [0111] L being O.sup.tBu, [0112] L being Cp; [0113] L
being amidinate; [0114] L being .beta.-diketonate; [0115] L being
keto-iminate; [0116] L' being NH; [0117] L' being NMe; [0118] L'
being NEt; [0119] L' being N.sup.nPr; [0120] L' being N.sup.iPr;
[0121] L' being N.sup.nBu; [0122] L' being N.sup.iBu; [0123] L'
being N.sup.sBu; [0124] L' being N.sup.tBu; [0125] L' being O;
[0126] the aromatic group containing two As at 1,2 positions;
[0127] the aromatic group containing two As at 1,3 positions;
[0128] the aromatic group being a heterocyclic group containing N,
Si, B, P or O; [0129] the aromatic group being a heterocyclic group
having a symmetric or asymmetric structure; [0130] the aromatic
group being pyrrole; [0131] the aromatic group being pyrazole;
[0132] the aromatic group being imidazole; [0133] the aromatic
group being silacyclopentadienide; [0134] the aromatic group being
borole; [0135] the aromatic group being phosphole; [0136] the
aromatic group being a methyl substituted pyrrole; [0137] the
aromatic group being an isopropyl substituted pyrrole; [0138] the
aromatic group being a tertbutyl substituted pyrrole; [0139] the
aromatic group being a methyl substituted pyrazole; [0140] the
aromatic group being an isopropyl substituted pyrazole; [0141] the
aromatic group being a tertbutyl substituted pyrazole; [0142] the
aromatic group being a methyl substituted imidazole; [0143] the
aromatic group being an isopropyl substituted imidazole; [0144] the
aromatic group being a tertbutyl substituted imidazole; [0145] the
aromatic group being a methyl substituted silacyclopentadienide;
[0146] the aromatic group being an isopropyl substituted
silacyclopentadienide; [0147] the aromatic group being a tertbutyl
substituted silacyclopentadienide; [0148] the aromatic group being
a methyl substituted borole; [0149] the aromatic group being an
isopropyl substituted borole; [0150] the aromatic group being a
tertbutyl substituted borole; [0151] the aromatic group being a
methyl substituted phosphole; [0152] the aromatic group being an
isopropyl substituted phosphole; [0153] the aromatic group being a
tertbutyl substituted phosphole; [0154] the Lanthanide precursor
being
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0155] the Lanthanide precursor being
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0156] the Lanthanide precursor being
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0157] the Lanthanide precursor being
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0158] the Lanthanide precursor being
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0159] the Lanthanide precursor being
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0160] the Lanthanide precursor being
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0161] the Lanthanide precursor being
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0162] the Lanthanide precursor being
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0163] the Lanthanide precursor being
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
[0164] the Lanthanide precursor being
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0165] the Lanthanide precursor being
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0166] the Lanthanide precursor being
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-;
[0167] the Lanthanide precursor being
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-;
[0168] the Lanthanide precursor being
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0169] the Lanthanide precursor being
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
[0170] the Lanthanide precursor being
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0171] the Lanthanide precursor being
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0172] the Lanthanide precursor being
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--O]-;
[0173] the Lanthanide precursor being
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0174] the Lanthanide precursor being
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0175] the Lanthanide precursor being
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0176] the Lanthanide precursor being
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0177] the Lanthanide precursor being
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0178] the Lanthanide precursor being
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0179] the Lanthanide precursor being
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0180] the Lanthanide precursor being
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0181] the Lanthanide precursor being
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0182] the Lanthanide precursor being
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0183] the Lanthanide precursor being
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0184] the Lanthanide precursor being
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0185] the Lanthanide precursor being
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-.
[0186] the Lanthanide precursor being
Cp-La--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0187] the
Lanthanide precursor being
Cp-Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0188] the
Lanthanide precursor being
Cp-Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0189] the
Lanthanide precursor being
Cp-Ce--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0190] the
Lanthanide precursor being
Cp-Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0191] the
Lanthanide precursor being
Cp-Nd--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0192] the
Lanthanide precursor being
Cp-Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0193] the
Lanthanide precursor being
Cp-Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0194] the
Lanthanide precursor being
Cp-Gd--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2-NMe]-; [0195] the
Lanthanide precursor being
Cp-Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0196] the
Lanthanide precursor being
Cp-Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0197] the
Lanthanide precursor being
Cp-Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0198] the
Lanthanide precursor being
Cp-Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-; [0199] the
Lanthanide precursor being
Cp-Tm--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0200] the
Lanthanide precursor being
Cp-Yb--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0201] the
Lanthanide precursor being
Cp-Lu--C.sub.5H.sub.3-1-Me-3-[CH.sub.2).sub.2--NMe]-; [0202] the
Lanthanide precursor being
Cp-La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0203] the
Lanthanide precursor being
Cp-Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0204] the
Lanthanide precursor being
Cp-Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0205] the
Lanthanide precursor being
Cp-Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0206] the
Lanthanide precursor being
Cp-Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0207] the
Lanthanide precursor being
Cp-Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0208] the
Lanthanide precursor being
Cp-Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--]-; [0209] the
Lanthanide precursor being
Cp-Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0210] the
Lanthanide precursor being
Cp-Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0211] the
Lanthanide precursor being
Cp-Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0212] the
Lanthanide precursor being
Cp-Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0213] the
Lanthanide precursor being
Cp-Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0214] the
Lanthanide precursor being
Cp-Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-;
[0215] the Lanthanide precursor being
Cp-Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; [0216] the
Lanthanide precursor being
Cp-Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-; or [0217] the
Lanthanide precursor being
Cp-Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]-.
[0218] Also disclosed are methods for depositing
Lanthanide-containing films on semiconductor substrates. The
Lanthanide precursors disclosed above are introduced into a reactor
having a substrate disposed therein. At least part of the
Lanthanide precursor is deposited onto the substrate to form the
Lanthanide-containing film on the substrate using a vapor
deposition process. The disclosed method may optionally include one
or more of the following aspects: [0219] depositing the
Lanthanide-containing film on the substrate at a temperature
between about 150.degree. C. and about 600.degree. C.; [0220]
depositing the Lanthanide-containing film on the substrate at a
pressure between about 0.5 mTorr and about 20 Torr; [0221] the
substrate being a GeO.sub.2 film; [0222] the substrate being a high
k gate dielectric film; [0223] the Lanthanide precursor being a
liquid at a temperature below 70.degree. C.; [0224] the Lanthanide
precursor being a liquid at a temperature below 40.degree. C.;
[0225] the Lanthanide-containing film being selected from the group
consisting of L.sub.2O.sub.3, (LnLn')O.sub.3,
Ln.sub.2O.sub.3-Ln'.sub.2O.sub.3, LnSi.sub.xO.sub.y,
LnGe.sub.xO.sub.y, (Al, Ga, Mn)LnO.sub.3, HfLnO.sub.x, and
ZrLnO.sub.x, LnSrCoO.sub.4, LnSrMnO.sub.4, wherein Ln' is a
different Lanthanide from Ln and x and y are each a number selected
from 1-5 inclusive; [0226] annealing the Lanthanide-containing
film. [0227] introducing a reactant species into the reactor;
[0228] the reactant species being selected from the group
consisting of O.sub.2, O.sub.3, H.sub.2O, H.sub.2O.sub.2, acetic
acid, formalin, para-formaldehyde, and combinations thereof; [0229]
the reactant species being O.sub.3; [0230] the reactant species
being H.sub.2O; [0231] introducing the Lanthanide precursor and the
reactant species at least partially simultaneously, as in a
chemical vapor deposition process; [0232] introducing the
Lanthanide precursor and the reactant species sequentially, as in
an atomic layer deposition process; [0233] introducing a precursor
into the reactor, wherein the precursor is different than the
Lanthanide precursor, and depositing at least part of the precursor
to form the Lanthanide-containing layer on the one or more
substrates; [0234] the precursor containing an element selected
from the group consisting of Hf, Si, Al, Ga, Mn, Ti, Ta, Bi, Zr,
Pb, Nb, Mg, Sr, Ba, Ca, and combinations thereof; [0235] the
precursor containing Ge; [0236] the precursor containing Hf; [0237]
the vapor deposition process being a chemical vapor deposition
process; [0238] the vapor deposition process being an atomic layer
deposition process; [0239] the vapor deposition process being a
spatial ALD process; [0240] the vapor deposition process including
a plasma process; [0241] the vapor deposition process not including
a plasma process; and [0242] the vapor deposition process being a
thermal process.
[0243] Also disclosed are Lanthanide-containing film coated
substrates comprising the product of the disclosed methods.
NOTATION AND NOMENCLATURE
[0244] Certain abbreviations, symbols, and terms are used
throughout the following description and claims and include:
[0245] As used in the disclosed embodiments, the indefinite article
"a" or "an" means one or more.
[0246] As used in the disclosed embodiments, "about" or "around" or
"approximately" in the text or in a claim means .+-.10% of the
value stated.
[0247] As used in the disclosed embodiments, the term
"independently" when used in the context of describing R groups
should be understood to denote that the subject R group is not only
independently selected relative to other R groups bearing the same
or different subscripts or superscripts, but is also independently
selected relative to any additional species of that same R group.
For example in the formula
MR.sup.1.sub.x(NR.sup.2R.sup.3).sub.(4-x), where x is 2 or 3, the
two or three R.sup.1 groups may, but need not be identical to each
other or to R.sup.2 or to R.sup.3. Further, it should be understood
that unless specifically stated otherwise, values of R groups are
independent of each other when used in different formulas.
[0248] As used in the disclosed embodiments, the term "hydrocarbyl
group" refers to a functional group containing carbon and hydrogen;
the term "alkyl group" refers to saturated functional groups
containing exclusively carbon and hydrogen so atoms. The
hydrocarbyl group may be saturated or unsaturated. Either term
refers to linear, branched, or cyclic groups. Examples of linear
alkyl groups include without limitation, methyl groups, ethyl
groups, propyl groups, butyl groups, etc. Examples of branched
alkyls groups include without limitation, t-butyl. Examples of
cyclic alkyl groups include without limitation, cyclopropyl groups,
cyclopentyl groups, cyclohexyl groups, etc.
[0249] As used in the disclosed embodiments, the abbreviation "Me"
refers to a methyl group; the abbreviation "Et" refers to an ethyl
group; the abbreviation "Pr" refers to a propyl group; the
abbreviation ".sup.nPr" refers to a "normal" or linear propyl
group; the abbreviation ".sup.iPr" refers to an isopropyl group;
the abbreviation "Bu" refers to a butyl group; the abbreviation
".sup.nBu" refers to a "normal" or linear butyl group; the
abbreviation ".sup.tBu" refers to a fed-butyl group, also known as
1,1-dimethylethyl; the abbreviation ".sup.sBu" refers to a
sec-butyl group, also known as 1-methylpropyl; the abbreviation
".sup.iBu" refers to an iso-butyl group, also known as
2-methylpropyl; the abbreviation "Cp" refers to cyclopentadienyl;
the abbreviation "Cp*" refers to pentamethylcyclopentadienyl.
[0250] As used in the disclosed embodiments, the abbreviation
"ortho-" or "o-" refers to an aromatic ring having carbon
replacements at 1,2 positions; the abbreviation "meta-" or "m-"
refers to an aromatic ring having carbon replacements at 1,3
positions; the abbreviation "para-" or "p-" refers to an
six-memebered aromatic ring having carbon replacements at 1,4
positions. For example, the compounds shown in following structure
formula are represented by
(Me.sub.2N)--La--O.sub.3(m-A.sub.2)H.sub.2-4-(CH.sub.2--CH.sub.2--NMe)-,
##STR00003##
wherein La is bonded in an .eta..sup.5 bonding mode to the aromatic
ring group; A is independently N, Si, B or P. Herein the
.eta..sup.5 is the hapticity of the above precursors representing
five contiguous atoms of the aromatic ring group bonded to the La
atom.
[0251] As used in the disclosed embodiments, the chemical formula,
L-Ln-C.sub.5R.sub.4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']- ,
L-Ln-C.sub.4AR.sub.3-3-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L'] and
L-Ln-C.sub.3(m-A.sub.2)R.sub.2-4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n)-L']--
, refer to the compounds having the following structure formula,
respectively:
##STR00004##
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic ring group; A is
independently N, Si, B, P or O; each E is independently C, Si, B or
P; m and n are independently 0, 1 or 2; m+n>1; each R is
independently an H or a C.sub.1-C.sub.4 hydrocarbyl group; and
adjacent Rs may be joined to form a hydrocarbyl ring; each L is
independently a -1 anionic ligand selected from the group
consisting of NR'.sub.2, OR', Cp, amidinate, .beta.-diketonate, or
keto-iminate, wherein R' is an H or a C.sub.1-C.sub.4 hydrocarbon
group; and adjacent R's may be joined to form a hydrocarbyl ring;
and each L' is independently NR'' or O, wherein R'' is an H or a
C.sub.1-C.sub.4 hydrocarbon group and adjacent R''s may be joined
to form a hydrocarbyl ring. Herein the .eta..sup.5 is the hapticity
of the above precursors representing five contiguous atoms of the
aromatic ring group bonded to the Ln atom.
[0252] As used herein, the abbreviation "Ln" refers to the
Lanthanide group, which includes the following elements: lanthanum
("La"), yttrium ("Y"), scandium ("Sc"), cerium ("Ce"), praseodymium
("Pr"), neodymium ("Nd"), samarium ("Sm"), europium ("Eu"),
gadolinium ("Gd"), terbium ("Tb"), dysprosium ("Dy"), holmium
("Ho"), erbium ("Er"), thulium ("Tm"), ytterbium ("Yb"), or
lutetium ("Lu"); the abbreviation "Cp" refers to cyclopentadienyl;
the abbreviation ".ANG." refers to angstroms; prime ("'") is used
to indicate a different component than the first, for example
(LnLn')O.sub.3 refers to a Lanthanide oxide containing two
different Lanthanide elements; the term "aliphatic group" refers to
a C.sub.1-C.sub.4 linear or branched chain alkyl group; the term
"alkyl group" refers to saturated functional groups containing
exclusively carbon and hydrogen atoms; the abbreviation "CVD"
refers to chemical vapor deposition; the abbreviation "LPCVD"
refers to low pressure chemical vapor deposition; the abbreviation
"ALD" refers to atomic layer deposition; the abbreviation "P-CVD"
refers to pulsed chemical vapor deposition; the abbreviation
"PE-ALD" refers to plasma enhanced atomic layer deposition; the
abbreviation "MIM" refers to Metal Insulator Metal (a structure
used in capacitors); the abbreviation "DRAM" refers to dynamic
random access memory; the abbreviation "FeRAM" refers to
ferroelectric random access memory; the abbreviation "CMOS" refers
to complementary metal-oxide-semiconductor; the abbreviation "THF"
refers to tetrahydrofuran; the abbreviation "TGA" refers to
thermogravimetric analysis; and the abbreviation "TMA " refers to
trimethyl aluminum.
[0253] The standard abbreviations of the elements from the periodic
table of elements are used herein. It should be understood that
elements may be referred to by these abbreviations (e.g., La refers
to Lanthanum, N refers to nitrogen, O refers to oxygen, C refers to
carbon, etc.). Additionally, Group 3 refers to Group 3 of the
Periodic Table (i.e., Sc, Y, La, or Ac). Similarly, Group 4 refers
to Group 4 of the Periodic Table (i.e., Ti, Zr, or Hf) and Group 5
refers to Group 5 of the Periodic Table (i.e., V, Nb, or Ta).
[0254] Any and all ranges recited in the disclosed embodiments are
inclusive of their endpoints (i.e., x=1 to 4 or x ranges from 1 to
4 includes x=1, x=4, and x=any number in between), irrespective of
whether the term "inclusively" is used,
[0255] Please note that the films or layers deposited, such as
silicon oxide or silicon nitride, may be listed throughout the
specification and claims without reference to their proper
stoichiometry. The layers may include pure (Si) layers, carbide
(Si.sub.oC.sub.p) layers, nitride (Si.sub.kN.sub.l) layers, oxide
(Si.sub.nO.sub.m) layers, or mixtures thereof, wherein k, l, m, n,
o, and p inclusively range from 1 to 6. For instance, silicon oxide
is Si.sub.nO.sub.m, wherein n ranges from 0.5 to 1.5 and m ranges
from 1.5 to 3.5. More preferably, the silicon oxide layer is
SiO.sub.2. These films may also contain Hydrogen, typically from 0
at % to 15 at %. However, since not routinely measured, any film
compositions given ignore their H content, unless explicitly stated
otherwise.
DESCRIPTION OF PREFERRED EMBODIMENTS
[0256] Lanthanide-containing film forming compositions are
disclosed. The Lanthanide-containing film forming compositions
comprise Lanthanide precursors having the general formulae,
L-Ln-C.sub.5H.sub.4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L')]-,
L-Ln-(A-containing aromatic
group)-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L')]-,
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic group; A-containing
aromatic group contains one or two As wherein the two As are at
ortho- or meta-positions; A is independently N, Si, B, P or O; each
E is independently C, Si, B or P; m and n are independently 0, 1 or
2; m+n>1; each R is independently an H or a C.sub.1-C.sub.4
hydrocarbyl group; adjacent Rs may be joined to form a hydrocarbyl
ring; each L is independently a -1 anionic ligand selected from the
group consisting of NR'.sub.2, OR', Cp, amidinate,
.beta.-diketonate, or keto-iminate, wherein R' is an H or a
C.sub.1-C.sub.4 hydrocarbon group; adjacent R's may joined to form
a hydrocarbyl ring; and each L' is independently NR'' or O, wherein
R'' is an H or a C.sub.1-C.sub.4 hydrocarbon group; and adjacent
R''s may joined to form a hydrocarbyl ring. One of ordinary skill
in the art would recognize that the A-containing aromatic group is
a heterocyclic cyclic group containing N, Si, B, P or O and may
have a symmetric or asymmetric structure.
[0257] The Lanthanide-containing film forming compositions further
comprise the Lanthanide precursors having the following
formulae:
L-Ln-C.sub.5R.sub.4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.4AR.sub.3-3-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L']-,
L-Ln-C.sub.3(m-A.sub.2)R.sub.2-4-[(ER.sub.2).sub.m-(ER.sub.2).sub.n-L'-]-
-,
referring to the following structure formula, respectively:
##STR00005##
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic group; A is
independently N, Si, B, P or O; each E is independently C, Si, B or
P; m and n are independently 0, 1 or 2; m+n>1; each R is
independently an H or a C.sub.1-C.sub.4 hydrocarbyl group; and
adjacent Rs may be joined to form a hydrocarbyl ring; each L is
independently a -1 anionic ligand selected from the group
consisting of NR'.sub.2, OR', Cp, amidinate, .beta.-diketonate, or
keto-iminate, wherein R' is an H or a C.sub.1-C.sub.4 hydrocarbon
group; and adjacent R's may be joined to form a hydrocarbyl ring;
and each L' is independently NR'' or O, wherein R'' is an H or a
C.sub.1-C.sub.4 hydrocarbon group and adjacent R''s may be joined
to form a hydrocarbyl ring.
[0258] Exemplary Ln-containing precursors wherein E is C; A is N;
m+n=2; and each R is independently hydrogen or a hydrocarbon group
having up to 4 carbon atoms include but are not limited to
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5H.sub.4-[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.4-[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.t)Bu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[CH.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.i-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-
, (Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-, (EtO)-
Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuN)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu],
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.sBU.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4[(CMe.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4-[(CMe.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4-[(CMe.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(.sup.sBuO)Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--, (.sup.tBuO
)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(OMe.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4-[(CMe.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4-[(CMe.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.nPrO-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--NEt]-,
(H.sub.2
N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.4--[(CMe.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nB.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(Cp)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iPrO-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4--[(CH.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-
[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4- [(CH.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2
).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.tB.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[CMe.sub.2).sub.2-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]- ,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2- NMe]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5M.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5Me.sub.4-[CMe.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPrO-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2- N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-
N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe
.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5Me.sub.4-[(CMe.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.sB.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1- Me-3-[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.n-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N-
.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.i-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N-
.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.n-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.-
nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.i-
Bu]-,
(.sup.tBu.sub.2)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.i-
Bu]-, (Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.s-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.-
sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.t-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.-
tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBu)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C
.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N-
.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N-
.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.-
nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.-
iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.-
sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.-
tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CMe.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(H.sub.2O)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2
).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup-
.nPr]--, (.sup.sBu.sub.2N)v
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--
-, (Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N-
.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.-
nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.-
iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.-
sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(CEt.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH-
]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).s-
ub.2--NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NM-
e]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).s-
ub.2--NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-
-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NE-
t]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).s-
ub.2--NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--
-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nP-
r]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nP-
r]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]---
,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2
--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]-
--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N-
.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]-
--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iP-
r]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup-
.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.-
sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(CP)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]-
--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.i-
Pr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N-
.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]-
--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.i-
Pr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup-
.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N-
.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.-
sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]--
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu-
]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.i-
Bu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--
-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu-
]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.-
sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]--
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu-
]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.s-
Bu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--
-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu-
]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.-
sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]--
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu-
]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.t-
Bu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--
-N.sup.tBu]-,
(.sup.iPR.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu-
]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--N.-
sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2---
O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--
-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2--
NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2--
NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2--
NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--, (.sup.sBu.sub.2N)-Ln-C.sub.5
H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-Me-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(Et.sub.2)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2---
NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2---
NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2---
NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2---
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2---
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-
-, (.sup.n
Pr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.-
2--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2--
NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N]H--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NM]-
e-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2--
NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2--
NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2--
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2--
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nB-
u]-, (.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe
.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]--
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-
-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.-
sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).s-
ub.2-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub-
.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CMe.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2--
NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2--
NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2--
NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2--
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2--
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C
.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]--
,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.i-
Bu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.s-
Bu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub-
.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.tB.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(CEt.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]-
--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N-
H]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).-
sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]-
--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]--
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH-
]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2---
NH]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--NH]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).s-
ub.2--NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NH]---
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe-
]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N-
Me]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).-
sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe-
]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NMe]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NM-
e]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2---
NMe]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).s-
ub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt]--
,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt-
]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N-
Et]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).-
sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.-
2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt-
]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NEt]-
-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--NE-
t]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2---
NEt]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).s-
ub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup-
.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub-
.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--
-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr-
]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
nPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).s-
ub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--
-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr-
]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
iPr]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).s-
ub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]- ,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-
-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nB-
u]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
nBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.-
2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-
-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iB-
u]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
iBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2
).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.-
2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-
-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sB-
u]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.-
sBu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.-
2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-, (Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-
3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]--
,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu-
]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.sup.t-
Bu]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--
-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-, (.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-
[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.-
2--O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub-
.2--O]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).su-
b.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.su-
b.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2-
).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2-
).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]---
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]---
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]--
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O]-
--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--O-
]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2---
O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.iPr.sub.2).sub.2--
-O]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NH]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.-
2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]---
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]---
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]--
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH]-
--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NH-
]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N-
H]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NH]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NMe]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.-
2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NMe-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NM-
e]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N-
Me]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NMe]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NEt]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.-
2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]--
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.5H.sub.3-1-
.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]--
,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt]-
-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NEt-
]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-NE-
t]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N-
Et]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
NEt]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]---
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--
-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr-
]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--, (.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-
3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--, (.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-
1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
- N.sup.iPr]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]---
,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--
-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr-
]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]--
,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]--
,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.iBu]-, (.sub.iPrO)-Ln-C.sub.5H.sub.3-1-
.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(H.sub.2O)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
N.sup.sBu]-,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]--
,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.su-
p.sBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub-
.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2-
).sub.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]--
,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.tBu]-,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).su-
b.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-
C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(Cp)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.5H.sub.3-1-.sup.iPr-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sB.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH
.sub.2).sub.2--N.sup.tBu]-,
(.sup.tB.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CMe.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBu.sub.2-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2
-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]-
--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]---
, (Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBu.sub.2N-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(CEt.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nP-
r]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nP-
r]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iP-
r]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iP-
r]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.nBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3
-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.iBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.sBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPR.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2---
N.sup.tBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.iPr.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.nPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N-
.sup.iPr]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
nBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.sBu]-, (.sup.iBu
.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.s-
up.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2--
N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.-
tBu]-,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.4NH.sub.3-3-[(C.sup.tBu.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2---
NH]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NH]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2---
NMe]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2---
NEt]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2---
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2---
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.nBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.iBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.sBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.-
2--N.sup.tBu]-, (.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2
)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup-
.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2-
--N.sup.tBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CH.sub.2).sub.2--O]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2--
NH]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2--
NMe]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2--
NEt]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2--
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2--
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPRO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.nBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.iBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.sBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub-
.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup-
.tBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-N.sup.-
tBu]-, (H.sub.2
N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CMe.sub.2).sub.2-O]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]---
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]-
--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH-
]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N-
H]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2--
NH]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NH]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NM-
e]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N-
Me]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2--
NMe]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NMe]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]--
,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-
-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt-
]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NE-
t]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N-
Et]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2--
NEt]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-NEt]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2--
N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.n-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.s-
up.nPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N-
.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iP-
r]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2--
N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iPr-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.s-
up.iPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N-
.sup.iPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]--
,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.nBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.nB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.n-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
nBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.su-
p.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.iBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.iB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.i-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
iBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.su-
p.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.sBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.sB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.s-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
sBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.su-
p.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub-
.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup-
.tBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tBu-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.tB-
u]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.t-
Bu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-N.sup.-
tBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C
.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(CEt.sub.2).sub.2-O]--,
(H.sub.2O)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]---
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]-
--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N-
H]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).-
sub.2--NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]-
--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH]--
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NH-
]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2---
NH]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NH]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--NH]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).s-
ub.2--NH]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe]--
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe-
]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N-
Me]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).-
sub.2--NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe-
]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NMe]-
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NM-
e]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2---
NMe]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NMe]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--NMe]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).s-
ub.2--NMe]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt]--
,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt-
]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N-
Et]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).-
sub.2--NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.-
2).sub.2--NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt-
]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NEt]-
-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--NE-
t]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2---
NEt]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--NEt]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--NEt]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).s-
ub.2--NEt]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup-
.nPr]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nPr]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub-
.2).sub.2--N.sup.nPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr]--
-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.nPr-
]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
nPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.s-
up.nPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).s-
ub.2--N.sup.nPr]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--N.sup.nPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr]--
-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.iPr-
]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
iPr]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.s-
up.iPr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).s-
ub.2--N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.nBu]-
-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.nB-
u]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
nBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.nBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.nBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.nBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.-
2--N.sup.iBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iPr.sub.2)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--
-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.iBu]-
-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.iB-
u]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
iBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.iBu]-,
(.sup.tPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.iBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.iBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.-
2--N.sup.sBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.sBu]-
-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.sB-
u]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
sBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.sBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.sBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.sBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.-
2--N.sup.tBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.tBu]-
-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.tB-
u]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.sup.-
tBu]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--N.sup.tBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--N.sup.tBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--N.su-
p.tBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.-
2--O]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub-
.2--O]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).su-
b.2--O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.su-
b.2).sub.2--O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2-
).sub.2--O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2-
).sub.2--O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2-
--O]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]---
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2
)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]---
,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]--
-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O]-
--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2--O-
]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.iPr.sub.2).sub.2---
O]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N-
H]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NH]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NH]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NH]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NH]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NH]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]---
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]---
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]--
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH]-
--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NH-
]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N-
H]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NH]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NMe]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-NMe]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.-
2).sub.2-NMe]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NMe]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NMe]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NMe]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NMe-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NM-
e]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N-
Me]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NMe]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NEt]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-NEt]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.-
2).sub.2-NEt]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NEt]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-NEt]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-NEt]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]--
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]--
,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt]-
-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NEt-
]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-NE-
t]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N-
Et]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
NEt]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2--
N.sup.iPr]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub-
.2-N.sup.nPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iPr]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iPr]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.-
2).sub.2-N.sup.iPr]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]---
,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr]--
-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iPr-
]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.i-
Pr]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iPr]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub-
.2-N.sup.iPr]--,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iPr]--,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.nBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]--
,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.nBu]-
-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.s-
up.nBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).su-
b.2-N.sup.nBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.nBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.nBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.-
iBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-N.sup.iBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.iBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]--
,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.iBu]-
-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.s-
up.iBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).su-
b.2-N.sup.iBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.iBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.iBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.-
sBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-N.sup.sBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.sBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]--
,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.sBu]-
-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.s-
up.sBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).su-
b.2-N.sup.sBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.sBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.sBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.-
tBu]-,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2-
).sub.2-N.sup.tBu]-,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-N.sup.tBu]-,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]--
,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup.tBu]-
-,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.s-
up.tBu]-,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).su-
b.2-N.sup.tBu]-,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-N.sup-
.tBu]-,
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.-
2-N.sup.tBu]-,
(H.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(Me.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(Et.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.iPr.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(.sup.nBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.iBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(.sup.sBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-
-O]--,
(.sup.tBu.sub.2N)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2)-
.sub.2-O]--,
(Cp)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(HO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(MeO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(EtO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iPrO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.nBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.iBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
(.sup.sBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O]--,
and
(.sup.tBuO)-Ln-C.sub.3(m-N.sub.2)H.sub.2-4-[(C.sup.tBu.sub.2).sub.2-O-
]--, wherein Ln is selected from Lanthanide elements consisting of
La, Y,
Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded in
an .eta..sup.5 bonding mode to the aromatic group; N may be
replaced with Si, B, P or O; and bridged C may be replaced with Si,
B or P.
[0259] Preferred Lanthanide precursors include
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--NMe)- and
(Me.sub.2N)-Ln-C.sub.5H.sub.3-1-Me-3-(CH.sub.2--CH.sub.2--O)--,
corresponding to the following structure formula, respectively:
##STR00006##
wherein Ln is selected from Lanthanide elements consisting of La,
Y, Sc, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu bonded
in an .eta..sup.5 bonding mode to the aromatic group. Specific
compounds include:
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Ce--C.sub.5H.sub.31-Me-3-[(CH.sub.2).sub.2--NMe],
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-,
(Me.sub.2N)--La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--,
(Me.sub.2N)--Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--, and
(Me.sub.2N)--Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--.
[0260] Alternatively, the compounds include
Cp-La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--NMe]-;
Cp-La--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Y--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Sc--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Ce--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Pr--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Nd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Sm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Eu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Gd--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Tb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Dy--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Ho--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Er--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Tm--C.sub.5H.sub.3-1- Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Tm--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--;
Cp-Yb--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--; and
Cp-Lu--C.sub.5H.sub.3-1-Me-3-[(CH.sub.2).sub.2--O]--.
[0261] The inventors recognize that the disclosed
Lanthanide-containing precursors having the above structures, i.e.,
having one aromatic group with asymmetric structure may be liquid
and less or not viscous. With smaller ligands the disclosed
Lanthanide-containing precursors having the above structures may
have high vapor pressure and may be used in direct liquid injection
(DLI) where the precursor is fed in a liquid state and then
vaporized before it is introduced into a reactor. In addition,
bridged aromatic groups, for example, cyclopentadienyl (Cp)/amino
or bridged Cpialkoxy, may help to stabilize the compounds.
[0262] The Lanthanide precursors offer unique physical and chemical
properties when compared to their corresponding homoleptic
compounds, which include tris-substituted cyclopentadienyl
Lanthanum compounds, La(RCp).sub.3, tris-acetamidinate compounds,
La(R--N--C(R').dbd.N--R).sub.3, or tris-formamidinate compounds,
La(R--N--C(H).dbd.N--R).sub.3. Such properties include better
control of steric crowding around the metal center, which in turn
controls the surface reaction on the substrate and the reaction
with a second reactant (such as an oxygen source). Independently
fine tuning the substituents on the ligands increases volatility
and thermal stability and so decreases melting point to yield
either liquids or low melting solids.
[0263] In order to synthesize stable Lanthanide precursors with
properties suited for the vapor deposition process (i.e., a
volatile, yet thermally stable, liquid or low melting solid (having
a melting point below about 105.degree. C.)), a direct correlation
between the properties of the central metal ion (coordination
number) and ligands (steric effect, ratio of two heteroleptic
ligands) has been observed. Preferably, the metal compound has a 3+
charge and coordination number of 6. Preferably m is 2 and n is 1.
Preferably the Lanthanide precursor has a melting point below about
105.degree. C., preferably below about 80'C, more preferably below
about 70.degree. C., and even more preferably below about
40.degree. C.
[0264] The synthesis of the lanthanide precursors may be carried
out by following methods:
Method A
[0265] By reacting at low temperature Ln(RCp).sub.2X (X.dbd.Cl, Br
or I) with the corresponding alkanolamine and/or alkylamine in a
suitable solvent, such as dichloromethane, THF or ether, where R is
defined above. The alkanolamine and alkylamine are commercially
available. After completion of the addition, the mixture warms to
room temperature with stirring. The solvent is removed under
vacuum. The residue is dissolved in a solvent, such as toluene. The
resulting mixture is filtered. Removal of the solvent produces the
lanthanide precursor.
Method B
[0266] By reacting Ln(RCp).sub.3 at low temperature with the
corresponding alkanolamine in a suitable solvent, such as heptanes,
dichloromethane, THF or ether, where R is defined above. The
alkanolamine is commercially available. After completion of the
addition, the mixture warms to room temperature with stirring. The
solvent is removed under vacuum to produce the lanthanide
precursor.
Method C
[0267] In-situ reacting LnX.sub.3 (where X.dbd.Cl, Br, I) (in a
stepwise reaction without isolation of intermediate products) with
a stoichiometric amount of RCpM (where R is selected from H or a
C.sub.1-C.sub.4 alkyl chain; and M.dbd.Li, Na, K) followed by
filtration, and reacting the filtrate with alkanolamine and/or
alkylamine to result in so lanthanide precursor.
[0268] A portion of the disclosed precursor compounds (hereinafter
the "Lanthanide precursor") may be deposited to form
Lanthanide-containing films using any vapor deposition methods
known to those of skill in the art. Examples of suitable vapor
deposition methods include without limitation, conventional
chemical vapor deposition (CVD), atomic layer deposition (ALD), or
other types of vapor depositions that are variations thereof, such
as plasma enhanced ALD (PEALD), plasma enhanced CVD (PECVD), low
pressure CVD (LPCVD), pulsed chemical vapor deposition (P-CVD), low
pressure CVD (LPCVD), sub-atmospheric CVD (SACVD), atmospheric
pressure CVD (APCVD), hot-wire CVD (HWCVD, also known as cat-CVD,
in which a hot wire serves as an energy source for the deposition
process), thermal ALD, thermal CVD, spatial ALD, hot-wire ALD
(HWALD), radicals incorporated deposition, and super critical fluid
deposition, or combinations thereof. The deposition method is
preferably ALD, PE-ALD, or spatial ALD in order to provide suitable
step coverage and film thickness control.
[0269] The type of substrate upon which the Lanthanide-containing
film will be deposited will vary depending on the final use
intended. In some embodiments, the substrate may be chosen from
oxides which are used as dielectric materials in MIM, DRAM, FeRam
technologies or gate dielectrics in CMOS technologies (for example,
HfO.sub.2 based materials, TiO.sub.2 based materials, GeO.sub.2
based materials, ZrO.sub.2 based materials, rare earth oxide based
materials, ternary oxide based materials, etc.) or from
nitride-based films (for example, TaN) that are used as an oxygen
barrier between copper and the low-k layer. Other substrates may be
used in the manufacture of semiconductors, photovoltaics, LCD-TFT,
or flat panel devices. Examples of such substrates include, but are
not limited to, solid substrates such as metal substrates (for
example, Au, Pd, Rh, Ru, W, Al, Ni, Ti, Co, Pt and metal silicides,
such as TiSi.sub.2, CoSi7, and NiSi.sub.2); metal nitride
containing substrates (for example, TaN, TiN, WN, TaCN, TiCN,
TaSiN, and TiSiN); semiconductor materials (for example, Si, SiGe,
GaAs, InP, diamond, GaN, and SiC); insulators (for example,
SiO.sub.2, Si.sub.3N.sub.4, SiON, HfO.sub.2, Ta.sub.2O.sub.5,
ZrO.sub.2, TiO.sub.2, Al.sub.2O.sub.3, and barium strontium
titanate); or other substrates that include any number of
combinations of these materials. Plastic substrates, such as
poly(3,4-ethylenedioxythiophene)poly (styrenesulfonte) [PEDOT:PSS],
may also be used. The actual substrate utilized may also depend
upon the specific precursor embodiment utilized. In many instances
though, the preferred substrate utilized will be selected from TiN,
Ru, and Si type substrates.
[0270] The vapor of the Lanthanide precursor is introduced into a
reactor containing at least one substrate. The temperature and the
pressure within the reactor and the temperature of the substrate
are held at conditions suitable for vapor deposition of at least
part of the Lanthanide precursor onto the substrate. In other
words, after introduction of the vaporized precursor into the
reactor, conditions within the chamber are such that at least part
of the vaporized precursor is deposited onto the substrate to form
the Lanthanide-containing film. The reactor may be any enclosure or
chamber of a device in which deposition methods take place, such
as, without limitation, a parallel-plate type reactor, a cold-wall
type reactor, a hot-wall type reactor, a single-wafer reactor, a
multi-wafer reactor, or other such types of deposition systems.
[0271] The reactor may be maintained at a pressure ranging from
about 0.5 mTorr to about 20 Torr. In addition, the temperature
within the reactor may range from about 250.degree. C. to about
600.degree. C. One of ordinary skill in the art will recognize that
the temperature may be optimized through mere experimentation to
achieve the desired result.
[0272] The substrate may be heated to a sufficient temperature to
obtain the desired Lanthanide-containing film at a sufficient
growth rate and with desired physical state and composition. A
non-limiting exemplary temperature range to which the substrate may
be heated includes from 150.degree. C. to 600.degree. C.
Preferably, the temperature of the substrate remains less than or
equal to 450.degree. C.
[0273] The Lanthanide precursor may be fed in liquid state to a
vaporizer where it is vaporized before it is introduced into the
reactor. Prior to its vaporization, the Lanthanide precursor may
optionally be mixed with one or more solvents, one or more metal
sources, and a mixture of one or more solvents and one or more
metal sources. The solvents may be selected from the group
consisting of toluene, ethyl benzene, xylene, mesitylene, decane,
dodecane, octane, hexane, pentane, or others. The resulting
concentration may range from approximately 0.05 M to approximately
2 M. The metal source may include any metal precursors now known or
later developed.
[0274] Alternatively, the Lanthanide precursor may be vaporized by
passing a carrier gas into a container containing the Lanthanide
precursor or by bubbling the carrier gas into the Lanthanide
precursor. Again, the carrier gas may include, but is not limited
to, Ar, He, N.sub.2, and mixtures thereof. The carrier gas and
Lanthanide precursor are then introduced into the reactor. If
necessary, the container may be heated to a temperature that
permits the Lanthanide precursor to be in its liquid phase and to
have a sufficient vapor pressure. The carrier gas may include, but
is not limited to, Ar, He, N.sub.2,and mixtures thereof. The
Lanthanide precursor may optionally be mixed in the container with
a solvent, another precursor, or a mixture thereof. The container
may be maintained at temperatures in the range of, for example,
0-100.degree. C. Those skilled in the art recognize that the
temperature of the container may be adjusted in a known manner to
control the amount of Lanthanide precursor vaporized.
[0275] In addition to the optional mixing of the Lanthanide
precursor with solvents, metal precursors, and stabilizers prior to
introduction into the reactor, the Lanthanide precursor may be
mixed with reactant species inside the reactor. Exemplary reactant
species include, without limitation, H.sub.2, metal precursors such
as TMA or other aluminum-containing precursors, other Lanthanide
precursors, TBTDET, TAT-DMAE, PET, TBTDEN, PEN, and any combination
thereof.
[0276] When the desired Lanthanide-containing film also contains
oxygen, such as, for example and without limitation, lanthanum
oxide, the reactant species may include an oxygen source which is
selected from, but not limited to, O.sub.2, O.sub.3, H.sub.2O,
H.sub.2O.sub.2, acetic acid, formalin, para-formaldehyde, and
combinations thereof.
[0277] When the desired Lanthanide-containing film also contains
nitrogen, such as, for example and without limitation, lanthanum
nitride or lanthanum carbo-nitride, the reactant species may
include a nitrogen source which is selected from, but not limited
to, nitrogen (N.sub.2), ammonia and alkyl derivatives thereof,
hydrazine and alkyl derivatives thereof, N-containing radicals (for
instance N., NH., NH.sub.2.), NO, N.sub.2O, NO.sub.2, amines, and
any combination thereof.
[0278] When the desired Lanthanide-containing film also contains
carbon, such as, for example and without limitation, Lanthanum
carbide or Lanthanum carbo-nitride, the reactant species may
include a carbon source which is selected from, but not limited to,
methane, ethane, propane, butane, ethylene, propylene, t-butylene,
isobutylene, CCl.sub.4, and any combination thereof.
[0279] When the desired Lanthanide-containing film also contains
silicon, such as, for example and without limitation, Lanthanum
silicide, Lanthanum silico-nitride, Lanthanum silicate, Lanthanum
silico-carbo-nitride, the reactant species may include a silicon
source which is selected from, but not limited to, SiH.sub.4,
Si.sub.2H.sub.6, Si.sub.3H.sub.8, TriDMAS, BDMAS, BDEAS, TDEAS,
TDMAS, TEMAS, (SiH.sub.3).sub.3N, (SiH.sub.3).sub.2O,
trisilylamine, disiloxane, trisilylamine, disilane, trisilane, an
alkoxysilane SiH.sub.x(OR.sup.1).sub.4-x, a silanol
Si(OH).sub.x(OR.sup.1).sub.4-x (preferably Si(OH)(OR.sup.1).sub.3 ;
more preferably Si(OH)(OtBu).sub.3 an aminosilane
SiH.sub.x(NR.sup.1R.sup.2).sub.4-x (where x is 1, 2, 3, or 4;
R.sup.1 and R.sup.2 are independently H ora linear, branched or
cyclic C1-C6 carbon chain; preferably TriDMAS, BTBAS, and/or
BDEAS), and any combination thereof. The targeted film may
alternatively contain Germanium (Ge), in which case the
above-mentioned Si-containing reactant species could be replaced by
Ge-containing reactant species.
[0280] When the desired Lanthanide-containing film also contains
another element, such as, for example and without limitation, Ge,
Ti, Ta, Hf, Zr, Nb, Mg, Al, Sr, Y, Ba, Ca, As, Sb, Bi, Sn, Pb, or
combinations thereof, the reactant species may include a precursor
which is selected from, but not limited to, alkyls such as
SbR.sup.i'.sub.3 or SnR.sup.i'.sub.4 (wherein each R.sup.i' is
independently H or a linear, branched, or cyclic C1-C6 carbon
chain), alkoxides such as Sb(OR.sup.i).sub.3 or Sn(OR.sup.i).sub.4
(where each R.sup.i is independently H or a linear, branched, or
cyclic C1-C6 carbon chain), and amines such as
Sb(NR.sup.1R.sup.2)(NR.sup.3R.sup.4)(NR.sup.5R.sup.8) or
Ge(NR.sup.1R.sup.2)(NR.sup.3R.sup.4)(NR.sup.5R.sup.8)(NR.sup.7R.sup.8)
(where each R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.8,
R.sup.7, and R.sup.8 is independently H, a C1-C6 carbon chain, or a
trialkylsilyl group, the carbon chain and trialkylsilyl group each
being linear, branched, or cyclic), and any combination
thereof.
[0281] The Lanthanide precursor and one or more reactant species
may be introduced into the reactor simultaneously (chemical vapor
deposition), sequentially (atomic layer deposition), or in other
combinations. For example, the Lanthanide so precursor may be
introduced in one pulse and two additional metal sources may be
introduced together in a separate pulse [modified atomic layer
deposition]. Alternatively, the reactor may already contain the
reactant species prior to introduction of the Lanthanide precursor.
The reactant species may be passed through a plasma system
localized remotely from the reactor, and decomposed to radicals.
Alternatively, the Lanthanide precursor may be introduced to the
reactor continuously while other reactant species are introduced by
pulse (pulsed-chemical vapor deposition). In each example, a pulse
may be followed by a purge or evacuation step to remove excess
amounts of the component introduced. In each example, the pulse may
last for a time period ranging from about 0.01 s to about 10 s,
alternatively from about 0.3 s to about 3 s, alternatively from
about 0.5 s to about 2 s.
[0282] In one non-limiting exemplary atomic layer deposition type
process, the vapor phase of a Lanthanide precursor is introduced
into the reactor, where at least part of the Lanthanide precursor
reacts with a suitable substrate in a self-limiting manner. Excess
Lanthanide precursor may then be removed from the reactor by
purging and/or evacuating the reactor. An oxygen source, such as
ozone, is introduced into the reactor where it reacts with the
absorbed Lanthanide precursor. Any excess oxygen source is removed
from the reactor by purging and/or evacuating the reactor. If the
desired film is a Lanthanide oxide film, this two-step process may
provide the desired film thickness or may be repeated until a film
having the necessary thickness has been obtained.
[0283] LaGeO.sub.x, wherein x is a number ranging from 1 to 5
inclusive, may spontaneously form when the ALD LaO film is
deposited on a Ge or GeO.sub.2 substrate. The LaGeO.sub.x film may
serve as a channel material in metal oxide semiconductor (MOS)
devices due to high hole mobility and low dopant activation
temperatures.
[0284] Alternatively, the LaO.sub.x film may be deposited as a
capping layer on an HfO.sub.x or ZrO.sub.x high k gate dielectric
film, with x being a number ranging from 1 to 5 inclusive. The
LaO.sub.x capping layer reduces Fermi level pinning effects between
the gate dielectric layer and a metal gate.
[0285] In another alternative, if the desired film is a Lanthanide
oxide film containing so another element, the two-step process
above may be followed by introduction of the vapor of a precursor
into the reactor. The precursor will be selected based on the
nature of the Lanthanide metal oxide film being deposited and may
include a different Lanthanide precursor. After introduction into
the reactor, the precursor is contacted with the substrate. Any
excess precursor is removed from the reactor by purging and/or
evacuating the reactor. Once again, an oxygen source may be
introduced into the reactor to react with the precursor. Excess
oxygen source is removed from the reactor by purging and/or
evacuating the reactor. If a desired film thickness has been
achieved, the process may be terminated. However, if a thicker film
is desired, the entire four-step process may be repeated. By
alternating the provision of the Lanthanide precursor, precursor,
and oxygen source, a film of desired composition and thickness can
be deposited.
[0286] The Lanthanide-containing films or Lanthanide-containing
layers resulting from the processes discussed above may include
La.sub.2O.sub.3, (LaLn)O.sub.3, La.sub.2O.sub.3--Ln.sub.2O.sub.3,
LaSi.sub.xO.sub.y, LaGe.sub.xO.sub.y, (Al, Ga, Mn)LnO.sub.3,
HfLaO.sub.x or ZrLaO.sub.x, LaSrCoO.sub.4, LaSrMnO.sub.4 where Ln
is a different Lanthanide and x is 1 to 5 inclusive. Preferably,
the Lanthanide-containing film may include HfLaO.sub.x or
ZrLaO.sub.x. One of ordinary skill in the art will recognize that
by judicial selection of the appropriate Lanthanide precursor and
reactant species, the desired film composition may be obtained.
[0287] Upon obtaining a desired film thickness, the film may be
subject to further processing, such as thermal annealing,
furnace-annealing, rapid thermal annealing, UV or e-beam curing,
and/or plasma gas exposure. Those skilled in the art recognize the
systems and methods utilized to perform these additional processing
steps. For example, the lanthanum-containing film may be exposed to
a temperature ranging from approximately 200.degree. C. and
approximately 1000.degree. C. for a time ranging from approximately
0.1 second to approximately 7200 seconds under an inert atmosphere,
an H-containing atmosphere, a N-containing atmosphere, an
O-containing atmosphere, or combinations thereof. Most preferably,
the temperature is 350.degree. C. for 1800 seconds under an inert
atmosphere of Argon. The resulting film may contain fewer
impurities and therefore may have an improved density resulting in
improved leakage current. The annealing step may be performed in
the same reactor in which the deposition process is performed.
Alternatively, the substrate may be removed from the reactor, with
the annealing/flash annealing process being performed in a separate
apparatus. Any of the above post-treatment methods, but especially
thermal annealing, has been found effective to reduce carbon and
nitrogen contamination of the Lanthanide-containing film. This in
turn tends to improve the leakage current and the interface trap
density (D.sub.it) of the film.
[0288] While embodiments of this invention have been shown and
described, modifications thereof can be made by one skilled in the
art without departing from the spirit or teaching of this
invention. The embodiments described herein are exemplary only and
not limiting. Many variations and modifications of the composition
and method are possible and within the scope of the invention.
Accordingly the scope of protection is not limited to the
embodiments described herein, but is only limited by the claims
which follow, the scope of which shall include all equivalents of
the subject matter of the claims.
* * * * *