Cyclic Voltammetric Studies of 3,5-Dichloro-2-Hydroxyacetophenone Sulfamethazine -Based Azomethine Compound and its Cu (II) Complex at Glassy Carbon Electrode

DOI: 10.22607/IJACS.2025.1302005

Research Article

ABSTRACT

Cyclic voltammetry has been used as an electrochemical method to study the electrochemical redox behavior of 3,5-dichloro- 2-hydroxyacetophenone sulfamethazine (DCHASMA) and its Cu(II) complex. Cyclic voltammograms of DCHASMA were recorded at glassy carbon electrode at different pH values using Britton–Robinson buffer and aqueous phosphate buffer. Under the examined experimental conditions, the complex exhibits a two-electron quasi-reversible reduction wave in the cathodic area, whereas the cyclic voltammograms of DCHASMA consist of an irreversible cathodic wave that follows a one-step, two-electron transfer electrochemical process. The diffusion controlled mechanism was proven by the linear relationship between the peak current and the square root of the scan rate. On cyclic voltammetric parameters, the effects of solvent, buffer medium, scan rates, and pH were examined. The various kinetic parameters such as charge-transfer coefficient (αn), diffusion coefficient (D01/2), and rate constant (K0 f,h) were also calculated.

Key words:  3,5-dichloro-2-hydroxyacetophenone sulfamethazine (DCHASMA), Charge-transfer coefficient (αn), Cyclic voltammetry, Diffusion coefficient (D01/2) and Rate constant (K0f,h).

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Indian Journal of Advances in Chemical Science,

Volume: 13, Issue : 2,  January 2025

ISSN No.: 2320-0898 (Print); 2320-0928 (Electronic)