Electrochemical activities of some heterocyclic compounds containing benzimidazole moiety

A number of N-substituted benzimidazole derivatives have been synthesized and tested for their antibacterial activities. The chemical structures of the newly synthesized compounds were verified on the basis of spectral and elemental methods of analysis. Apart of this electrochemical analysis are performed on these derivatives. The electrochemical reduction of these compounds takes place in a single, two-electron transfer, diffusioncontrolled, irreversible wave in the pH range 2.0-12.0 at dropping mercury and glassy carbon electrodes. A plausible reduction mechanism is suggested on the basis of cyclic voltammetric, polarographic and coulometric studies. Kinetic parameters, i.e., charge transfer coefficient (n) and forward rate constant (K 0 f, h) have also been calculated. In this paper we present new data on the electrochemical activities of 4,6-diphenyl-5[2-(2-methylprop-1-enyl)-1H benzimidazole-1yl] pyrimidene2-(5H)-thione derivatives. Key WordsCyclic voltammetric, charge transfer coefficient (n) and forward rate constant