Water soluble mixed-ligand oxovanadium(IV) complexes of acetylacetone and aldimine ligands

Abstract

Water soluble mixed-ligand oxovanadium(IV) complexes of sulphonated salicylaldimine Iigands of a-amino acids Na₂HL.H₂O[1, R=H, CH₃, CH(CH₃)₂ and CH₂Ph] and acetylacetone of the. formula Na₂[VO(L)(acac)].3H₂O have been synthesized and characterized by IR, UV/VIS, EPR, magnetic moments and redox behaviour. The coordination sphere of the complexes are of the type VO(ONO)(OO), where O atoms are phenolic, carboxylic, ketonic and enolic type and N is of azomethine type. The complexes are one electron paramagnetic and show 1:2 electrolytic conductivity. The complexes display irreversible one electron oxidation peaks in H₂O in·the range 0.46-0.55 V vs SCE.