

Author: Maruani J. Coope J.A.R. McDowell C.A.
Publisher: Taylor & Francis Ltd
ISSN: 1362-3028
Source: Molecular Physics, Vol.18, Iss.2, 1970-02, pp. : 165-176
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Abstract
A more detailed analysis is given here of the singularities in the E.S.R. spectrum of the trifluoromethyl radical in a polycrystalline matrix. Some of the unexplained ‘extra' lines are interpreted as resulting from orientations such that some of the resonance fields are stationary as a result of ‘non-crossing' of the manifolds of resonance fields due to second-order splitting. A calculation of the polycrystalline spectrum for a planar axial model of · CF 3 is presented, and shows that the second-order effect is of the right order of magnitude.
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