ESR Spectrum of the Radical Species Trapped in X-Irradiated Single Crystals of Dimethyl (9-fluorenyl) Sulfonium Bromide

1 March 1968

journal article
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 48 (5) , 1942-1949
https://doi.org/10.1063/1.1668995

Abstract

The electron spin resonance spectrum of single crystals of dimethyl (9-fluorenyl) sulfonium bromide, irradiated with x-rays at room temperature, reveals the presence of three free-radical species. Two of these have been identified with reasonable certainty as (CH3)2SBr (A) and 9-fluorenyl (B). The third radical (C) is probably one in which the unpaired electron is mainly localized on a sulfur atom i.e., RS. The components of the hyperfine coupling and g tensors for these radicals have been determined and the results discussed in terms of the electronic structure of these radicals. For radical A the 79Br and 81Br nuclear quadrupole coupling constants were also determined.

Keywords

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