Temperature dependence of EPR spectrum of 2-trifluoromethylnitrobenzene radical anion in acetonitrile

Temperature dependence of EPR spectrum of 2-trifluoromethylnitrobenzene radical anion in acetonitrile Научная публикация

Журнал

Russian Chemical Bulletin
ISSN: 1066-5285 , E-ISSN: 1573-9171

Вых. Данные

Год: 2006, Том: 55, Номер: 6, Страницы: 961-967 Страниц : DOI: 10.1007/s11172-006-0362-4

Ключевые слова

radical anions; isotropic hyperfine interaction; dynamic modulation; activation parameters; hindered rotation; slow exchange; EPR spectroscopy

Авторы

Polenov E. A. , Shundrin L. A. , Mel'nikov P. V.

Организации

1	(Данные Web of science) MV Lomonosov Moscow State Acad Fine Chem Technol, Moscow 119571, Russia
2	(Данные Web of science) Russian Acad Sci, NN Vorzhtsov Novosibirsk Inst Organ Chem, Siberian Branch, Novosibirsk 630090, Russia

Temperature dependence of the EPR spectrum of 2-trifluoromethylnitrobenzene radical anion in anhydrous acetonitrile in the temperature range 217 <= T <= 296 K was studied and simulated. Temperature-dependent dynamic modulation of the fluorine isotropic hyperfine structure is caused by slow hindered rotation of CF3 group with an activation energy of E-F* = 36.5 +/- 0.5 kJ mol(-1), which is the highest value for motions in pi-type free radicals studied to date.

Polenov E.A. , Shundrin L.A. , Mel'nikov P.V.
Temperature dependence of EPR spectrum of 2-trifluoromethylnitrobenzene radical anion in acetonitrile
Russian Chemical Bulletin. 2006. V.55. N6. P.961-967. DOI: 10.1007/s11172-006-0362-4 WOS Scopus РИНЦ

Опубликована в печати:

1 июн. 2006 г.

Web of science	WOS:000242652000004
Scopus	2-s2.0-33750697615
РИНЦ	13517889
OpenAlex	W2126139588