A comparison of binuclear dimethylplatinum(ii) complexes with the bridging ligands X(PPh2)2, X = CH2 or NH
Abstract
The reaction of [Pt2Me4(μ-SMe2)2], 1, with dppa = Ph2PNHPPh2 gave the complex [Pt2Me4(μ-SMe2)(μ-dppa)] and, with more dppa, a mixture of the binuclear complex [Pt2Me4(μ-dppa)2] and the mononuclear complex [PtMe2(dppa)]. In contrast, reaction of [Pt2Me4(μ-SMe2)(μ-dppa)] with dppm = Ph2CH2PPh2 or of [Pt2Me4(μ-SMe2)(μ-dppm)] with dppa gave only the binuclear complex [Pt2Me4(μ-dppm)(μ-dppa)]. This unusual complex, which has both bridging dppm and dppa