THE ELECTROCHEMICAL REDUCTION OF META-DINITROBENZENE IN DIMETHYLSULFOXIDE
CALIFORNIA UNIV LOS ANGELES DEPT OF ENGINEERING
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The electrochemical reduction of meta-dinitrobenzene in solutions of dimethylsulfoxide was studied on platinum electrodes. The object of the investigation was to determine the number of electrons transferred and the mechanism of transfer in the presence and absence of a proton donor, ammonium perchlorate. The electrochemical reduction in the absence of a proton donor takes place in two steps, which correspond to the formation and reduction of the m-DNB radical anion. When a proton donor is added, a homogeneous reaction takes place in the solution near the electrode which results in an effective increase in the number of electrons to four, corresponding to the reduction to nitrophenyl hydroxylamine. In separate studies, the diffusion coefficient of m- DNB in DMSO is found by the diaphragm cell method to be 0.00000615 sq cmsec. The solubility is found to increase from 3.51 molal at 24C to 4.64 molal at 49. 75C.
- Physical Chemistry
- Electrochemical Energy Storage