Abstract
Reactions of 2-(dimethylaminomethyl)ferrocenyl-lithium ((FcN)Li,1) with various cerium(IV) precursors lead to the formation of heterobimetallic organocerium(III) complexes. The compounds Li3[(FcN)2CeF4(THF)3] (2), (FcN)2CeF(DME)2 (3), Li4[(FcN)CeCl6] (4), and Li[(FcN)CeCl3(DME)] (5) have been isolated by redox reactions. Similar treatment of (C5Me5)2 Ce(μ-Cl)2K(THF)2 with one equivalent of1 affords the neutral species (C5Me5)Ce(FcN)Cl (6)via displacement of one C5Me5 ligand. Complexes of the type (C5Me5)Ln(FcN)Cl have also been isolated forLn=Pr (7), Nd (8), and Sm (9). These and related heterobimetallic lanthanideFcN complexes have been studied by Mosbauer spectroscopy.
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