Chemistry of oxovanadyl(IV) and peroxo-vanadium(V) complexes

CHED 1189

Michelle Sanchez, smahapat@regis.edu and S. N. Mahapatro, smahapat@regis.edu. Department of Chemistry, Regis University, 3333 Regis Blvd., Denver, CO 80221
Oxovanadyl(IV) complexes were synthesized by the reactions of vanadium (V) with physiologically important ligands such as citric, tartaric, malic, maleic, and ascorbic acid by following literature methods. The solution structures of the resulting complexes were studied by EPR and ESI-MS. Peroxovanadium(V) complexes were generated by the reaction of vanadium(V) complexes with hydrogen peroxide. The peroxo complexes undergo slow reduction with glutathione and ascorbate. Preliminary cyclic voltametric studies on vanadium (IV) and vanadium(V) complexes will be presented.