UV-VISIBLEAND ELECTROCHEMICAL STUDIES ON ACID-BASE EQUILIBRIUM OF [V^(IV)O(NTA)]- TETRADENTATE COMPLEX ENCAPSULATED IN AQUEOUS SURFACTANT MICELLES

Abstract

In this paper, we report UV-Visible spectroscopic and electrochemical studies of acid-base equilibrium of nitrilotriacetato oxovanadium(IV) [V^IVO(NTA)]^- complex as model complex of non-enzyme vanadium containing metalloenzymes in aqueous surfactant micelles. The observed pKa values and stability of the [V^IVO(NTA)]^- complex in aqueous surfactant micelles follow the order: SDS<CTAB. The pH dependent mid-point redox potential of  [V^IVO(NTA)]^- complex in aqueous surfactant micelles follow the order SDS> TritonX-100 > CTAB.