ZnIIand CdIIFerrocenechalcogenolate Complexes

Abstract

The preparation of the ferrocene-based reagents FcSSiMe3(1) and fc(SSiMe3)2(2) [Fc = (η5-C5H5)Fe(η5-C5H4)–; fc = Fe(η5-C5H4)2–] is reported together with their use in the formation of the tetrahedral zinc complexes [(N,N′-tmeda)Zn(SFc)2] (3a) and [(N,N′-tmeda)Zn(S2fc)] (4a), respectively (tmeda = tetramethylethylenediamine). The structures of these coordination complexes are compared to the new ferroceneselenolates [(N,N′-tmeda)Zn(SeFc)2] (3b) and [(N,N′-tmeda)Zn(Se2fc)] (4b), themselves prepared using FcSeSiMe3and fc(SeSiMe3)2, respectively. The synthesis and characterization of dimeric [Cd2(µ-EFc)2(EFc)2(PPr3)2] (5a, E = S; 5b, E = Se) are also described.