The condensation of isatin with pyridine carboxylic acid hydrazides in methanol give rise to hydrazone ligands. By the reactions of oxovanadium(IV) sulphate with hydrazones in presence of sodium hydroxide in methanol [VO(L)H2O] type complexes were obtained. The complexes were characterized by elemental analyses, conductances, magnetic moments, TGA and spectral (IR, Electronic and EPR) data. The...

The aim of the present study is to synthesize the oxovanadium complex of the V3+ ion with isatin sciff bases. Spectroscopic methods have been used to confirm these models of complexation and to understand the structures of the species formed in methanolic solution. We also have isolated a complex of Vanadium (III) with isatin schiff bases in the solid phase.

The electrochemical behavior of binuclear oxovanadium complex with citric acid has been studied at a glassy carbon working electrode (GCE) in aqueous 0.1 M NaClO4 as a supporting electrolyte at pH 5.9 and 8.0. It was found that [VO(Cit.)]2.6H2O complex is irreversibly oxidized (VO) with anodic peak potential, Epa=+899 mV to +1260 mV vs. Ag/AgCl for scan rate 10 to 500 mVs. It should be mentione...

In order to avoid low absorption, incorporation, and undesirable side effects of inorganic oxovanadium compounds, the antidiabetic activities of organic oxovanadium (IV) compounds in alloxan-induced diabetic mice were investigated. Vanadyl carboxymethyl carrageenan (VOCCA) and vanadyl carboxymethyl chitosan (VOCCH) were synthesized and administrated through intragastric administration in differ...

Five oxovanadium(IV) complexes, which were divided into two groups, [V(IV)O(bhbb, nhbb)(H(2)O)(2)] (tridentate ligands: H(2)bhbb = 2-(5-bromo-2-hydroxylbenzylideneamino)benzoic acid, 1; H(2)nhbb = 2-(5-nitro-2-hydroxylbenzylideneamino)benzoic acid, 2) and [V(IV)O(cpmp, bpmp, npmp)(2)] (bidentate ligands: Hcpmp = 4-chloro-2-((phenylimino)methyl)phenol, 3; Hbpmp = 4-bromo-2-((phenylimino)methyl)p...

Oxovanadium(IY) complexes with schiff bases, viz., N,N'-bis(2-hydroxy benzylidene)benzidine (HBB), N,N'-bis(2hydroxy benzylidine)-p-phenylenediamine (HBP) and cinnamylidene-2-aminophenol (CAPh) have been synthesized and characterized by elemental analysis, molar conductance, electronic spectra, Fr-IR, IH-NMR, ESR, FAB mass, thermal and magnetic susceptibility measurements. FAB mass and thermal ...