Multinuclear Complexes of Co+2,Ni+2,Cu+2 and Sn+2With (o,o′-Diethyl Dithiophosphate)Tin(IV)

Tin metal react with bis (thiophosphoryl) disulfide in refluxing toluene to give the compound tetrakis- (o,o-diethyl dithiophosphate) tin(IV). [Sn{S2P(EtO)2}4], through an oxidative addition reaction. Tri and pentanuclear complexes of general formulas [Sn{S2P(EtO)2}4(MCl2)n], and a mixed valance Sn(II) and Sn(IV) compound of general formula [Sn3{S2P(EtO)2}4Cl4], M=Co(II), Ni(II) or Cu(II),n=2,4 were prepared by a direct reaction of MCl2.6H2O, (M=Co,Ni), CuCl2.4H2O and SnCl2.2H2O with the tin compound. The complexes of the general formula [Sn3{S2P(EtO)2}4Cl4(MCl2)2],were prepared from the reaction of [Sn3{S2P(EtO)2}Cl4] and MCl2.6H2O (M=Co,Ni) and CuCl2.4H2O. The prepared were characterized by atomic absorption, IR and UV/Vis spectroscopy, conductivity and magnetic measurments.