Mononuclear and dinuclear complexes of stannyldimethylplatinum(IV)via oxidative addition reactions

Dimethylplatinum(II) complexes of general formula [PtMe2(NN)], NN is a chelating diimine ligand, have attracted a great deal of interest towards oxidative addition reactions; as it is a key step in many catalytic reactions. The oxidative addition reactions of alkyl halides to the dimethylplatinum(II) complexes containing diimine ligands have been studied extensively, although there are a few reports of organoplatinum complexes containing tin atom [1-2]. Therefore, we herein report the oxidative addition reactions of electron rich complexes [PtMe2(NN)] {NN = bpy (2,2 -bipyridine), phen (1,10-phenanthroline) and bu2bpy (4,4 -di-tert-butyl-2,2 -bipyridine)} with some organotin halides or pseudohalides to give the corresponding mononuclear or dinuclear dimethylplatinum(IV) complexes. The products have been fully characterized by elemental analysis, IR, multinuclear NMR (1H, 13C, 195Pt, 119Sn), HH COSY and DEPT-135 NMR spectroscopy and X-ray crystal structure determination. The results provide more information about their structural features.