Electrochemical investigations on some hydrazones

The dectrochemical behaviour of 3-(4ʹ-sulphonamoy0hydrazono-4-phenylaininobutane-2,4-dioncs has been studied over a wide pH range at dropping mercury and glassy carbon electrodes. These aryl hydrazones give one four-electron wave/peak corresponding to the reduction of hydrazono group. The wave/peak is found to be diffusion-controlled and irreversible in nature. A reduction mechanism is suggested for the aryl hydrazones.