New reagents for the synthesis of a series of ferrocenoyl functionalized copper and silver chalcogenolate complexes

摘要

A series of silylated ferrocenoyl chalcogenide reagents, FcC(O)ESiMe3 (E = S, Se, Te; Fc = ferrocene), can be prepared in very good yield from FcC(O) Cl and LiESiMe3. These reagents are used in the preparation of triphenylphosphine-ligated copper and silver ferrocenoyl thiolate and selenolate complexes, [M-4(E{O}CFc)(4)(PPh3)(4)], (M = Cu, Ag; E = S, Se) and [Cu-2(mu-Se{O}CFc)(2)(PPh3)(3)] from solubilized copper(I) and silver(I) acetate. The structures of these complexes have been determined via single-crystal X- ray diffraction. The driving force for these reactions is the thermodynamically favorable formation and elimination of AcOSiMe3. The synthesis and characterization of both starting reagents and cluster complexes are discussed.