Chemistry of platinum hydrides. Part XXII. Formation of trinuclea cluster complexes from platinum(II) dihydrides containing bulky phosphines

Abstract Carbon monoxide reacts readily under ambient conditions with platinum(II) dihydrides containing bulky phosphines, PtH 2 (PR 3 ) 2 (where PR 3 = Cy 3 P, Pr i 3 P, Bu t 2 Bu n P and Bu t Ph 2 P) i benzene solution displacing hydrogen as well as one phosphine ligand and giving trinuclear cluster complexes cotaining bridging carbonyl groups. These cluster complexes, which can aloso be preprared by the reactions of carbon monoxide with (PR 3 ) 2 Pt, undergo oxidative addition reactions with iodine, giving tetracoordinated platinum(II) complexes, PtI 2 (PR 3 (CO).