Unprecedented Formation of Dinuclear Platinum(II) Complexes with μ-Alkenylidene Bridging Ligands from Reactions of Pt(dppm)₂Cl₂ with Alkyl Acetylenes

Abstract

A new series of dinuclear platinum(II) complexes, [Pt 2 (µ-dppm)(dppm-P,P′)(µ-CdCRPPh 2 CH 2 PPh 2 -P)(CtCR)] 2+ (R ) alkyl), has been synthesized, and the structure of one of the complexes was confirmed by X-ray crystallography. A proposed mechanism to account for their formation from the corresponding alkynyl precursors is suggested. Their luminescence properties are also reported.