Synthesis and Structure of Platinum Complexes with Organyltriphenylphosphonium Chlorides and DMSO

Abstract

Complexes [Ph₃PCH₂C(O)Me][PtCl₃(DMSO-S)] and [Ph₃PCH₂CH=CH₂][PtCl₃(DMSO-S)] were synthesized by the reaction of organyltriphenylphosphonium chloride with potassium tetrachloroplatinate (2 : 1) in dimethyl sulfoxide. The reaction of but-2-enylbis(triphenylphosphonim) dichloride with potassium hexachloroplatinate or hexachloroplatinic acid leads to the formation of the complex [Ph₃PCH₂CH=CHCH₂PPh₃][PtCl₅(DMSO-S)]₂. Phosphorus atoms in the cations of the synthesized complexes have a tetrahedral surrounding, and the anions [PtCl₅(DMSO-S)]⁻ are square in shape.