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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1974 Aug;71(8):3106–3110. doi: 10.1073/pnas.71.8.3106

Nuclear Coupling of 33S and the Nature of Free Radicals in Irradiated Crystals of Cystine Dihydrochloride

Joseph H Hadley Jr *, Walter Gordy †,‡
PMCID: PMC388630  PMID: 4370226

Abstract

The 33S hyperfine structure has been observed and analyzed in the electron spin resonance of γ-irradiated single crystals of cystine dihydrochloride at 77°K and at room temperature. The radicals observed at room temperature and previously assigned as RCH2S are proved to be disulfide radicals, RCH2SS. However, the RCH2S radical is identified by the 33S measurements in samples irradiated at 77°K, annealed at 200°K, and observed at 77°K. This monosulfide radical appears to undergo reactions to form disulfide radicals at room temperature.

Keywords: electron spin resonance, 33S hyperfine structure, RCH2SS and RCH2S radicals

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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