Reactions of Hafnium Isopropoxide Isopropanolate with Thio-Schiff Bases Derived from S-methyldithiocarbazate

The reactions of hafnium isopropoxide isopropanolate with thio-Schiff bases (derived from the condensation of S-methyldithiocarbazate with aldehydes/ketones) in different molar ratios 1:n (n = 1 to 4) in refluxing benzene have been carried out. The products of the type, Hf(OPri)4-n(TSB)n (n = 1 to 4) and Hf(OPri)4–2n(TSB«)n (n = 1 or 2) ([TSB]− and [TSB«]2- are the anions of mono- and dibasic thio-Schiff bases, respectively) were obtained and characterized on the basis of elemental analyses, electrical conductance measurements and spectral (infrared, electronic and 1H n.m.r.) data.