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Effect of matrix and substituent on the electronic structure of trapped benzene radical cationsстатья
Информация о цитировании статьи получена из
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Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Feldman V.I., Sukhov F., Orlov A., Kadam R., Itagaki Y., Lund A.
- Журнал: Physical Chemistry Chemical Physics
- Том: 2
- Номер: 1
- Год издания: 2000
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 29
- Последняя страница: 35
- DOI: 10.1039/a906483d
- Аннотация: The structure and dynamics of the radical cations produced from benzene, monodeuterated benzene and toluene in various low-temperature matrices were characterized by EPR and ENDOR spectroscopy. It was found that the nature of the matrix had a dramatic effect on the EPR spectra of benzene cation. Rigid structures corresponding to the B-2(1g) and B-2(2g) states are revealed in solid argon and halocarbon (CFCl3) matrices, respectively, whereas only dynamically averaged patterns are observed in other hosts used (krypton, xenon, sulfur hexafluoride). Deuterium monosubstitution has no appreciable effect on the cation structure observed in argon and halocarbon matrices, which implies matrix control of the preferred electronic state. In contrast, the toluene radical cation exhibits only a B-2(2g)-like structure both in argon and in CFCl3 matrices, that is, the internal structural effect strongly predominates over environment effects in this case. The results are discussed in qualitative terms taking into consideration the matrix and substituent effects on the charge distribution in benzene cation.
- Добавил в систему: Фельдман Владимир Исаевич