Izvorni znanstveni članak

https://doi.org/10.5562/cca2528

Electrochemical Reduction of Isatin-monohydrazone on Mercury Electrode

Semiha Çakır ; Department of Chemistry, Faculty of Science, Gazi University, 06500 Teknikokullar - Ankara, Turkey
Ender Biçer ; Department of Chemistry, Faculty of Arts and Science, Ondokuz Mayıs University, 55139, Atakum-Samsun, Turkey
Emine Yılmaz Arslan ; Department of Chemistry, Faculty of Science, Gazi University, 06500 Teknikokullar - Ankara, Turkey

Sažetak

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.

Ključne riječi

isatin monohydrazone; voltammetry; electrode mechanism; tautomerism; ionization

Hrčak ID:

141980

URI

https://hrcak.srce.hr/141980

Datum izdavanja:

20.7.2015.

Posjeta: 2.392 *