PREPARATION AND PROPERTIES OF SOME CATIONIC BINUCLEAR PLATINUM(I) COMPLEXES

Reaction of [Pt2Cl2(μ-dppm)2] with ligands, L, in the presence of [PF6- gave stable cationic diplatinum(I) complexes [Pt2L2(μ-dppm)2][PF6]2 where L = PMe2Ph, PMePh2, PPh3, NH3, C5H5N. Reaction of [Pt2(NH3)2(μ-dppm)2][PF6]2 with CO gave [Pt2(CO)2(μ-dppm)2][PF6]2 and an unsymmetrical complex [Pt2(CO)(C5H5N)(μ-dppm)2][PF6]2 was also prepared. The compounds were characterized by vibrational and 1H and 31P NMR spectroscopy and the presence of direct platinumplatinum bonds is indicated. © 1979.