Electrochemical Study of Direct and Indirect Oxidation of 1,5- Diphenylcarbazide in Water Mixed Solvent Systems by Differential Pulse Voltammetry

Abstract

Direct and indirect oxidation of 1,5-diphenylcarbazide have been studied at hanging mercury drop
electrode with differential pulse voltammetric technique. Direct oxidation of 1,5- diphenylcarbazide
with KMnO4 resulted in formation of 1,5-diphenylcarbazone in the system at the reduction potential of
–0.3 Volts. Oxidation study with K2Cr2O7 resulted in formation of 1,5-diphenylcarbazone at the
reduction potential of -0.3 Volts along with formation of 1,5-diphenylcarbadiazone at the reduction
potential of -0.6Volts in the system. Thus indicates that KMnO4 can be utilized for controlled step
oxidation of 1,5- diphenylcarbazide, whereas, K2Cr2O7 can be utilized for maximum oxidation of 1,5-
diphenylcarbazide. Indirect oxidation of 1,5-diphenylcarbazide was studied by dissolving 1,5-
diphenylcarbazide in water mixed solvent systems for aerial oxidation due to formation of 1,5-
diphenylcarbazone occurred and detected at the reduction potential of –0.3Volts