Voltammetric and spectroscopic behaviour of the copper adducts of thiol and thioether ligands under aerobic and anaerobic conditions
Polish Journal of Chemistry, vol.76, no.5, pp.663-669, 2002 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 76 Issue: 5
- Publication Date: 2002
- Journal Name: Polish Journal of Chemistry
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.663-669
- Keywords: Aminoacids, Copper complexes, Redox reactions, Spectroscopy, Thioether, Thiol, Voltammetry
- Ondokuz Mayıs University Affiliated: Yes
Abstract
Joint spectroscopic (ESR, electronic absorption and FT IR) and voltammetric (square-wave and cyclic voltammetry) techniques were employed to investigate the properties of copper adducts with cysteine, N-acetylcysteine and methionine under aerobic and anaerobic conditions. The metal oxidation state in the solid and solvated adducts adheres to the presence of oxygen, whereas ESR results (g∥ = 2.245, g⊥ = 2.059, A∥ = 170 Gauss) reveal tetragonally distorted octahedral copper(II) environment under aerobic circumstances. In presence of the thiol and thioether ligands under nitrogen voltammetric measurements evidence formation of copper(I) species.