Hindered rotation of the CF3 group in tert-butoxy trifluoromethyl nitroxide

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DOIResolve DOI: http://doi.org/10.1021/j100219a019
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TypeArticle
Journal titleThe Journal of Physical Chemistry
ISSN0022-3654
Volume86
Issue22
Pages43724375; # of pages: 4
AbstractAn EPR spectroscopic study of the CF3N(Ȯ)OC(CH3)3 radical reveals that the rotation of the CF3 group is restricted, which provides additional support for the view that alkoxy alkyl nitroxides are less planar at nitrogen than dialkyl nitroxides. The rotation of the CF3 group can be described by the Arrhenius equation with log (A/s-1) = 13.0 ± 0.3 and Ea = 14.1 ± 0.9 kJ mol-1. At 104 K the individual F hyperfine splittings are +19.97, -2.29, and -0.89 G. It is suggested that negative spin reaches the fluorines by a combination of a through-bond spin polarization and a 1,3 p-p interaction. © 1982 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21276602
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Record identifier25ba51aa-99f2-4f82-98c5-b0a5758513fe
Record created2015-10-13
Record modified2017-03-23
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