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Electrochemical and ESR study of the C-H bond activation. Electrocatalytical oxidation with participation of radical cation of phenazine-di-N-oxideстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Kulakovskaya Svetlana I., Kulikov Alexander V., Berdnikov Vladimir M., Ioffe Naftolii T., Shestakov Alexander F.
- Журнал: Electrochimica Acta
- Том: 47
- Год издания: 2002
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 4245
- Последняя страница: 4254
- Аннотация: The mechanism of oxidation of organic substrates (cyclohexanol, ethanol, methanol, tetrahydrofurane, triethylether of ortoformic acid, dioxane, toluene and cyclohexane) in the presence of a mediator, electrochemically generated radical cation of phenazine-di-N-oxide, has been studied by the methods of ESR electrolysis and cyclic voltammetry. The study was carried out at Au,Pt and glass carbon electrodes in acetonitrile, as well as in methanol and its deuterated derivatives (CH3OD,CD3OD) used as asolvent and a substrate simaltaneously. The effect of temperature, acids, water, oxygen, the nature of solvent, substrate and supporting electrolyte on the shape and intensity of ESR signal and cyclic voltammograms (CV) has been studied. ESR spectra of radical intermediates were revealed: one intermediate with g-factor 2.0023 in CH3OH and CH3OD and two intermediates with g-factors 2.0023 and 2.0036 in CD3OD. The obtained results were explaned by the overal two-electron mechanism of the electrochemical oxidation of the substrate via formation of the complex of substrate with the radical cation of phenazine-di-N-oxide.
- Добавил в систему: Kulakovskaya Svetlana Ivanovna