B. Persson
Jan 25, 1978
Citations
0
Influential Citations
14
Citations
Journal
Journal of Electroanalytical Chemistry
Abstract
Abstract In the electrochemical reduction of diphenyl disulfide and its four S-oxides in aprotic solvents the sulfur-sulfur bonds is cleaved by two electrons. Diphenyl disulfone and diphenyl disulfide are reduced in one, phenyl benzenethiolsulfonate and phenyl benzenethiolsulfinate in two and benzenesulfinyl phenyl sulfone in three steps. The difference between the polaro-graphic half-wave potential and the peak potential at glassy carbon ranges from 0.3 V for diphenyl disulfone to 0.8 V for diphenyl disulfide. The reduction potentials for the first steps decrease from the sulfinyl sulfone to the disulfide. Thiophenolate and/or benzenesulfinate ions are produced in the coulometric experiments from the electrode reactions coupled with secondary reactions. Phenyl benzenethiolsulfonate or diphenyl disulfide appear as products in the intermediate reduction steps.