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1 2005

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Characterization and Antifungal Study of Genuine Oxovanadium (IV) Mixed-Ligand Complexes with Schiff Bases

Parekh H., Pansuriya P., Patel M.

Polish Journal of Chemistry

2005

Vol. 79 / nr 12

1843-1851

New oxovanadium(IV) complexes [VO(L)(A)] (KHL = potassium salt of o-hydroxyacetophenoneglycine, A1 = 2,2'-bipyridylamine, A2 = bis(benzylidene)ethylenediamine, A3 = thiophene-o-carboxaldeneaniline, A4 = thiophene-o-carboxaldene-p-toluidine, A5 = bis(benzylidene)-1,8-diaminonaphthalene, A6 = bis(acetophenone)ethylenediamine) have been isolated and characterized by elemental analyses, infrared spectra, electronic spectra, magnetic measurement and thermogravimetric analyses. An octahedral geometry has been assigned to all the VO(IV) complexes. The antifungal activity of Schiff bases, oxovanadium(IV) complexes, vanadyl sulphate, control (DMSO) and fungicides (bavistin and emcarb) have been evaluated against A. niger, F. oxysporum and A. flavus, which show clear enhancement in the antifungal activity upon complexation with Schiff bases but moderate activity as compared to the standard fungicides bavistin and emcarb.