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Lanthanoiden‐Komplexe, IV. Alkyl‐und Donor‐substituierte Cyclopentadienyl‐Komplexe des Neodyms
Author(s) -
Herrmann Wolfgang A.,
Anwander Reiner,
Munck Florian C.,
Scherer Wolfgang
Publication year - 1993
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19931260208
Subject(s) - chemistry , homoleptic , alkyl , adduct , medicinal chemistry , hexamethylphosphoramide , cyclopentadienyl complex , derivative (finance) , lanthanide , neodymium , stereochemistry , organic chemistry , catalysis , metal , ion , laser , physics , optics , financial economics , economics
Complexes of the Lanthanides, IV [1] . — Alkyl‐and Donor‐substituted Cyclopentadienyl Complexes of Neodymium Neodymium trichloride reacts with the potassium salt K(DoCH 2 CH 2 Cp) ( 2c , DoOMe; 2d , DoNMe 2 ) of the functionalized cyclopentadienyls in THF to yield the sublimable homoleptic complexes Nd(DoCH 2 CH 2 Cp) 3 ( 3c, d ). Under the same conditions, K( i BuCp) ( 2a ) yields the adduct Nd( i 1‐BuCp) 3 (THF) ( 3a ′), which is obtained free of THF by thermal treatment. The silylamide route is applied to synthesize the homoleptic neopentylcyclopentadienyl derivative Nd‐(NeopCp) 3 ( 3b ). The alkyl‐substituted complexes, particularly the isobutyl derivative, show a remarkable volatility. The first solvent‐free, monomeric complex of the type „LnCp 2 Cl”, namely Nd(Me 2 NCH 2 CH 2 Cp) 2 Cl ( 4 ), is obtained from NdCl 3 and two equivalents of 2d .