ORGANOTIN AND TIN(IV) DERIVATIVES OF DIMETHYLDITHIOARSINIC ACID

Article abstract of DOI:10.1016/S0022-328X(00)86825-4

Organotin derivatives of dimethyldithioarsinic (dithiocacodylic) acid have been obtained from the appropriate organotin chloride and the sodium salt of the latter.Tin(IV) chloride and NaS2AsMe2*2H2O yielded only two products, namely Cl2Sn(S2AsMe2)2 and Sn(S2AsMe2)4, regardless of the reagent ratio.Spectroscopic characterization of the compounds (infrared and 1H NMR) provides structural information suggesting that the dimethyldithioarsinato group behaves as monodentate (or anisobidentate) ligand in Me2Sn(S2AsMe2)2, Bu2Sn(S2AsMe2)2 and Cy3Sn(S2AsMe2), as bidentate in Ph2Sn(S2AsMe2)2, Ph3Sn(S2AsMe2) and Cl2As(S2AsMe2)2, whereas Sn(S2AsMe2)4 contains both mono- and bidentate ligands, presumably in a six-coordinate structure.