Synthesis and Characterization of Sulfomanide Schiff Base Complexes of Germanium Tetrachloride

Abstract

New sulphonamide Schiff base adducts of germanium tetra-chloride of the type GeCl₄.2SBH₂ have been prepared and characterized. These have been prepared by the reactions of germanium tetrachloride with bifunctional tridentate Schiff bases (SBH₂) such as HOC₆H₄CH:NC₆H₄SO₂KHR (where R represents various heterocycles) and having the donor system . Molecular weight determinations in boiling chloroform and molar conductance measurements in dimethyl formamide show their monomeric and non-electrolytic nature, respectively. The coordination of the azomethine nitrogen to germanium has been substantiated by IR and ¹H NMR spectral studies and these further show the non-reactivity of the sulphonamide group on coordination. The elemental analyses and spectral data confirm a 1:2 (metal:ligand) stoichiometry with a coordination number of six for the central germanium atom.