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Title

Conformational dependence of ß-hyperfine coupling constants in the nitroxide series

Authors
Ricca, Alessandra
Tronchet, Jean M.J.
Published in Journal of Physical Chemistry. C. 1992, vol. 96, no. 26, p. 10779-10784
Abstract An ab initio study has been performed, at both the UHF and UMP2 levels, of the conformational dependence of j3 hyperfine coupling constants of the dimethyl nitroxide radical. This compound has been chosen as a model of the nitroxide series, and relations between the conformations of j3 hydrogens and the out-of-plane deviations of the NO group have been derived. It is thus possible to construct an abacus allowing an easy interpretation of the ESR spectra of such compounds, which confirms the results of a previous semiempirical study. In addition, correlation effects on j3 spin densities are shown to follow the same dependence as that reported for delocalization and spin polarization.
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Research group Groupe Weber
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RICCA, Alessandra et al. Conformational dependence of ß-hyperfine coupling constants in the nitroxide series. In: Journal of Physical Chemistry. C, 1992, vol. 96, n° 26, p. 10779-10784. https://archive-ouverte.unige.ch/unige:2928

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Deposited on : 2009-09-21

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