Electrochemical Reduction of Isatin-monohydrazone on Mercury Electrode

Cakir S., Bicer E., Arslan E. Y.

CROATICA CHEMICA ACTA, vol.88, no.2, pp.97-103, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 88 Issue: 2
  • Publication Date: 2015
  • Doi Number: 10.5562/cca2528
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.97-103
  • Gazi University Affiliated: Yes


Electrochemical behaviour of isatin monohydrazone (IM) on a hanging mercury drop electrode in the Britton-Robinson (B-R) buffer solution of pH = 2.00 - 9.00 has been investigated using square-wave voltammetry (SWV) and cyclic voltammetry (CV) techniques. In the pH range of 2.00 - 5.00, the voltammogram of IM exhibited a single cathodic irreversible peak. When the pH value exceeds 5.00, a new cathodic irreversible peak was also seen. According to the voltammetric data, a plausible electrode reaction mechanism of IM was proposed. The first reduction peak of IM is resulted from the reduction of = N-NH-group with consumption of 2e(-)/2H(+). Also, its second cathodic peak is formed by the participation of 2e(-)/2H(+) for the reduction of -N=N-group on its tautomeric form.