Coordination chemistry of trimethylsilylphosphaalkyne: a phosphaalkyne bearing a reactive substituent

Abstract

Trimethylsilylphosphaalkyne binds readily to a variety of transition metals. Binding can take place using either the end-on or side-on mode and to either mononuclear or multinuclear metal complexes. The synthesis, structure and characterisation of eight such complexes, [Cp₂Zr(PMe₃)(Me₃SiCP)], [(C₆F₅)₂FB(C₆F₄)PCSiMe₃)ZrCp₂(PMe₃)], [(C₆F₅)₂XB(C₆F₄)(ZrCp₂)₂P₂(CSiMe₃)₂] (X = F/H), [(Me₃Si–CP)₂Mo(dppe)₂], [CpMo(CO)₂PC(SiMe₃)Mo(CO)₂Cp], [(Ph₃P)₂Pt(Me₃SiCP)], [{(dppe)Pd}₂(Me₃SiCP)] and [Pd₅(PPh₃)₅(Me₃SiCP)₃] are described together with attempts to desilylate some of these complexes.