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ESR AND QUANTUM-CHEMICAL STUDIES OF THE STRUCTURES AND THERMAL TRANSFORMATIONS OF THE RADICAL CATIONS OF VINYLCYCLOPROPANE IN IRRADIATED FROZEN FREON MATRICES - SIMULATION OF RADICAL PROCESSES IN SOLIDSстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: SHCHAPIN IY, FELDMAN VI, BELEVSKII VN, DONSKAYA NA, CHUVYLKIN ND
- Журнал: Russian Chemical Bulletin
- Том: 43
- Номер: 1
- Год издания: 1994
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 1
- Последняя страница: 12
- DOI: 10.1007/BF00699126
- Аннотация: Thermal transformations of vinylcyclopropane radical cations (VCP.+) in X-ray-irradiated frozen Freon matrices (CFCl2CF2Cl and CFCl3) were studied by ESR; radical processes involving VCP.+ in solid VCP were simulated. Gauche- and anti-VCP.+ were found to be the primary radical cations, however, the former, unlike the latter, is stable only under ''gas-phase'' conditions. The thermodynamic equilibrium between anti-VCP.+ and its less stable distonic form, dist(90,0)-C5H8.+, is established in frozen Freon matrices and the VCP host matrix; the structure of dist(90,0)-C5H8.+ is stabilized by a molecule of anti-VCP. In CFCl3, along with dist(90,0)-C5H8.+, pi-dimeric resonance rant[-VCP](.+)(2) complex was detected. A general scheme of the transformations of VCP.+ in the solid phase has been proposed.
- Добавил в систему: Фельдман Владимир Исаевич