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

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

Journal

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

Output data

Year: 2006, Volume: 55, Number: 6, Pages: 961-967 Pages count : DOI: 10.1007/s11172-006-0362-4

Tags

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

Authors

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

Affiliations

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

Published print:

Jun 1, 2006

Web of science	WOS:000242652000004
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