Synthesis and structures of (dialkylsilylene)bis(phosphine)-nickel, palladium, and platinum complexes and (η6-arene)(dialkylsilylene)nickel complexes

Abstract

A series of dialkylsilylene-group 10 metal complexes (R^H₂Si)(Me₃P)₂M (M = Ni, Pd, Pt, R^H₂ = 1,1,4,4-tetrakis(trimethylsilyl)butane-1,4-diyl) and novel (η⁶-arene)(dialkylsilylene)nickel complexes (η⁶-arene)(R^H₂Si)Ni were synthesized and characterized by NMR spectroscopy and X-ray analysis. The perpendicular geometry around the Si–M bond and the short Si–M distances of (R^H₂Si)(Me₃P)₂M complexes indicate the significant back donation from the metal to the silylene ligand.