AN ELECTROCHEMICAL STUDY OF THE PENTANUCLEAR ZN(II) AND CO(II) COMPLEXES OF PHTHALOCYANINES SUBSTITUTED WITH 4 15-MEMBERED TETRAAZAMACROCYLES


TAN N., GUREK A., BEKAROGLU O.

BULLETIN OF ELECTROCHEMISTRY, vol.11, no.10, pp.500-504, 1995 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 10
  • Publication Date: 1995
  • Title of Journal : BULLETIN OF ELECTROCHEMISTRY
  • Page Numbers: pp.500-504

Abstract

The pentanuclear Zn(II) and Co(II) complexes of phthalocyanine substituted with four 15-membered tetraazamacrocyles (15M-TAMPc) have been studied in dimethyl sulphoxide solution by cyclic voltammetric methods. The cyclic voltammogram of Zn(II) complex of 15M-TAMPc is characterised with one cathodic wave and two anodic waves. The reduction wave and the second oxidation wave show irreversible behaviour. The first oxidation peak appears as a quasi-reversible one on the anodic scan. These are one-electron oxydo-reduction waves. For the Co(II) analog, two one-electron reduction waves were observed. These waves show a quasi-reversible behaviour at all sweep rates studied. The reaction mechanisms and diffusion coefficients have been investigated in this work.