Synthesis and Structural Features of S-Benzyl Dithiocarbazate Schiff Base Complexes of Si(IV)

Abstract

Abstract The present paper describes the synthesis and structural features of the silicon complexes with S-benzyldithiocarbazate Schiff bases. The resulting complexes of the type, Si(OAc)4–2Ln (where L is the dianion of the ligand and n = 1 or 2) have been characterized on the basis of elemental analyses, molecular weight determinations and conductivity measurements. The nature of bonding has been further discussed on the basis of IR and 1H NMR spectral data. The covalent bonding of oxygen and sulphur with silicon and a dative bond between silicon and nitrogen indicate trigonal bipyramidal and octahedral geometries for Si(OAc)2L and SiL2 type of derivatives, respectively. A few representative complexes have also been screened for their fungicidal as well as bactericidal activity and found to be quite active in this respect.