The mechanism of electroreduction of nitrobenzene and 3-nitropyridine in DMF in the presence of divalent cations |
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| Authors: | Marek Lipsztajn Karol Buchalik Zbigniew Galus |
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| Institution: | Laboratory of Electroanalytical Chemistry, Institute of Fundamental Problems of Chemistry, University of Warsaw, Pasteura 1, 02093 Warsaw, Poland |
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| Abstract: | The differences in electrochemical behaviour of nitrobenzene and 3-nitropyridine connected with a change of supporting electrolyte are discussed. It is shown that in the presence of alkaline earch metal cations a deposit of composition (NB?. Me2+) is formed at the electrode surface. The cations: Ba2+, Ca2+ and Mg2+ cause the instability of the nitrobenzene radical anion formed in the first electroreduction step. It was found that in the presence of Ba2+ and Ca2+ the NOB/NO?. couple is stabilized. |
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