Cluster complex metathesis: synthesis, structures, and dynamic behaviour of Bi- and tri-metallic hexanuclear cluster complexes [MM′Ru4(µ3-H)2(CO)12(PPh3)2](M = M′= Cu, Ag, or Au; M = Cu, M′= Ag or Au; M = Ag, M′= Au)

Abstract

The hexanuclear metal clusters [MM′Ru₄(µ₃-H)₂(CO)₁₂(PPh₃)₂](M = M′= Cu, Ag, or Au; M = Cu, M′= Ag or Au; M = Ag, M′= Au) have been prepared by treating the dianion [Ru₄(µ-H)₂(CO)₁₂]^2– with the complexes [MX(PPh₃)](M = Au or Cu, X = Cl; M = Ag, X = l) in the presence of TIPF₆; the trimetallic clusters may alternatively be synthesized by metathesis of the two appropriate bimetallic species, and the crystal structure of the compounds with the metal cores Cu₂Ru₄, Ag₂Ru₄, and CuAgRu₄ have been established by X-ray diffraction.