Synthesis and Structure of Platinum Complexes with Organyltriphenylphosphonium Chlorides and DMSO

Complexes [Ph 3 PCH 2 C(O)Me][PtCl 3 (DMSO- S )] and [Ph 3 PCH 2 CH=CH 2 ][PtCl 3 (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 [Ph 3 PCH 2 CH=CHCH 2 PPh 3 ][PtCl 5 (DMSO- S )] 2 . Phosphorus atoms in the cations of the synthesized complexes have a tetrahedral surrounding, and the anions [PtCl 5 (DMSO- S )] − are square in shape.