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Ion-radical intermediates of the radiation-chemical transformations of organic carbonatesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 октября 2016 г.
- Авторы: Shiryaeva Ekaterina S., Sosulin Ilya S., Saenko Elizaveta V., Feldman Vladimir I.
- Журнал: Radiation Physics and Chemistry
- Том: 124
- Год издания: 2016
- Издательство: Elsevier
- Местоположение издательства: United States
- Первая страница: 19
- Последняя страница: 25
- DOI: 10.1016/j.radphyschem.2016.01.010
- Аннотация: Abstract The spectral features and reactions of ion-radical intermediates produced from organic carbonates in low-temperature matrices were investigated by EPR spectroscopy and quantum-chemical calculations. It was shown that radical cations of diethyl carbonate and dimethyl carbonate underwent intramolecular hydrogen transfer to yield alkyl-type species, as was suggested previously. Meanwhile, radical cation of EC demonstrates a ring cleavage even at 77 K, while radical cation of PC is probably intrinsically stable and undergo an ion–molecule reaction with a neighboring neutral molecule in dimers or associates. Radical anions were obtained in glassy matrices of diethyl ether or perdeuteroethanol. The radical anions of linear carbonates show photoinduced fragmentation to yield the corresponding alkyl radicals; such process may also occur directly under radiolysis. Radical anions of cyclic carbonates are relatively stable and yield only trace amounts of fragmentation products under similar conditions.
- Добавил в систему: Ширяева Екатерина Сергеевна