ELECTROCHEMICAL OXIDATION OF HYDRAZINE AND OF DIMETHYLHYDRAZINES IN DIMETHYLSULFOXIDE AT A PLATINUM ELECTRODE

The electrochemical oxidation of hydrazine, 1,1-dimethyldydrazine and 1,2-dimethylhydrazine in DMSO has been studied by chronopotentiometry, controlled-potential coulometry, and cyclic voltammetry at platinum electrodes. For these compounds the overall reaction is a one-electron oxidation in DMSO. The heterogeneous kinetic parameters for the rate-controlling electrode reaction for the three hydrazines have been evaluated. The values of (1 - α) and log (ks,h/cms-1) for hydrazine 1,1-dimethylhydrazine, and 1,2-dimethylhydrazine, respectively, are: 0.33, -6.5; 0.46, -9.0; and 0.44, -7.5. The oxidation products have been identified, and oxidation mechanisms consistent with the data are proposed. © 1969.