Synthesis, fluxional behaviour, and oxidative-addition reactions of some µ-alkylthio-diplatinum(<scp>II</scp>) complexes

Abstract

A series of complexes cis-[Pt2X2(PMe2Ph)2(µ-SMe)2](X = Cl, I, Me, or Ph) and cis-[Pt2X2(PMe2Ph)2(µ-SEt)2](X = Cl or Me) has been prepared. The complexes undergo a fluxional process thought to involve inversion at the bridging sulphur atoms. and the rate is strongly dependent on the group X. Reactions of the complexes with X = Me or Ph with methyl iodide are complicated and involve oxidative-addition–reductive-elimination sequences to give monomeric organoplatinum complexes as the final products.