Synthesis of Oxovanadium(IV) Complexes with Acethydrazide and Isonicotinic Acid Hydrazide

Abstract

The synthesis and characterization of several new oxovanadium (IV) Complexes with acethydrazide (AH) and isonicotinic acid hydrazide (INH) are reported. Elemental analyses, magnetic susceptibility and electrical-conductance measurements, electronic and I.R. spectra and DTA-TGA studies have been used to characterize the compounds. The analytical data and TGA curves show that the 1:l complexes are of the type[ (VO)L]X.nH,O (X=SOi or 2C1-) (L = AH or INH) while the 1:2 complexes are espectral data show that the ligand behaves in the keto or enol form. This depends upon the reaction conditions and the pH of the medium.A square-pyramidal structure is proposed for the compounds on the basis of magnetic and spectral measurements.