In view of the interesting results obtained by the complexes of vanadium metal, a series of oxovanadium (IV) complexes have been synthesized by the reactions of Schiff bases, derived from tere-phthalic acid, succinic acid, adipic acid and salicylaldehyde and 2-hydroxyacetophenone with oxovanadium (IV) sulphate in absolute ethanol. Complexes were well characterized on the basis of analytical data, magnetic susceptibility, UV-Vis and IR data. The X-band EPR spectra of all the complexes have been recorded in room and liquid nitrogen temperature. Powder X-ray diffraction pattern shows the particles are in nano range. Tentative structures of the complexes have been proposed. All the oxovanadium (IV) complexes have also been asayed for their antifungal activities against three fungi, viz. Aspergillus niger, Curvularia pallescens and Colletotrichum capsici.

Keywords: Oxovanadium (IV); Schiffbase; IR; UV-Vis; EPR; Powder X-ray diffraction; Antifungal activity.