Synthesis and Characterization of Organotin(IV) Thiobiurets

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.

Keywords:

• organotin thiobiurets
• spectroscopic studies