Abstract
Some triphenyltin and dibutyltin thiobiurets of the type Ph3SnL and Bu2SnL2 [where LH = 1,5 diphenyl-2-thiobiuret (PPTBH), 1-(4-ethoxyphenyl)-5-phenyl-2-thiobiuret (EtOPPTBH), or 1-naphthyl-5-phenyl-2-thiobiuret (naphPTBH)], have been synthesized and characterized by elemental analysis and various physicochemical techniques. Molar conductance measurements show the non-ionic behavior of the complexes. FAB mass spectra exhibit their monomeric nature. 1H and 13CNMR spectra support the proposed stoichiometry of the complexes. Infrared spectra suggest monoanionic bidentate mode of bonding of the ligands. The powder XRD patterns of the complex Bu2Sn (PPTB)2 are indicative of triclinic crystal system.