Voltammetric and spectroscopic studies of vanadium(V)-nicotinamide interactions at physiological pH

Cakir S., Bicer E.

TURKISH JOURNAL OF CHEMISTRY, vol.31, no.2, pp.223-231, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 31 Issue: 2
  • Publication Date: 2007
  • Journal Name: TURKISH JOURNAL OF CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.223-231
  • Keywords: vanadium complexes, nicotinamide, voltammetry, spectroscopy, OXOVANADIUM(V) COMPLEXES, BIOLOGICAL-SYSTEMS, REDOX BEHAVIOR, VO2+ COMPLEXES, VANADIUM, NICOTINAMIDE, DERIVATIVES, CHEMISTRY, OXIDATION, ACID
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

The interaction of nicotinamide (NA) with NH4VO3 at the physiological pH (pH 7.4) was studied by voltammetry and UV-Vis spectroscopy. The reduction of V(V) ions complexed with NA in phosphate buffer (pH 7.4) was observed as a well-defined reversible reduction peak at -0.35 V. The stoichiometric (metal:ligand) ratio of the complex of V(V) with NA was determined as 1:2 by the mole ratio method.