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Structural Investigation of Homoleptic Lanthanide(III) Tris(pivalamidinates), [ t BuC(N i Pr) 2 ] 3 Ln ( Ln = Ce, Eu, Tb)
Author(s) -
Dröse Peter,
Blaurock Steffen,
Hrib Cristian G.,
Hilfert Liane,
Edelmann Frank T.
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201000337
Subject(s) - homoleptic , lanthanide , chemistry , europium , anhydrous , tris , monoclinic crystal system , derivative (finance) , crystallography , inorganic chemistry , ion , crystal structure , metal , organic chemistry , economics , biochemistry , financial economics
Three new homoleptic lanthanide(III) tris(pivalamidinates), [ t BuC(N i Pr) 2 ] 3 Ln ( Ln = Ce ( 1 ), Eu ( 2 ), Tb ( 3 )) were synthesized by reaction of anhydrous Ln Cl 3 with 3 equivalents of in situ prepared Li[ t BuC(N i Pr) 2 ] in THF. X‐ray structural analyses confirmed the presence of homoleptic, unsolvated tris(amidinates) in which the central Ln 3+ ions are coordinated by three chelating pivalamidinate anions in a distorted all‐nitrogen trigonal prismatic arrangement. Compounds 1 – 3 all crystallize in the monoclinic system, with 1 and 3 containing solvent of crystallization ( 1 : toluene, 3 : n ‐pentane) whereas the europium derivative 2 is unsolvated.