Radical pair formation in X-irradiated croconate ions: A single crystal ESR study

The crystal structure of CsNa(C 5O 5) has been determined and shows that the croconate rings stack along the crystallographic a direction. Single crystals of this compound have been X-irradiated at 77 K. The angular dependence of the resulting ESR signals shows that a radical pair is trapped; the co...

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Bibliographic Details
Published in:International journal of radiation applications and instrumentation. Part C, Radiation physics and chemistry Radiation physics and chemistry, 1991, Vol.37 (2), p.279-284
Main Authors: Geoffroy, Michel, Wermeille, Michel, Castan, Paule, Deguenon, Diane, Bernardinelli, Gérald
Format: Article
Language:English
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Summary:The crystal structure of CsNa(C 5O 5) has been determined and shows that the croconate rings stack along the crystallographic a direction. Single crystals of this compound have been X-irradiated at 77 K. The angular dependence of the resulting ESR signals shows that a radical pair is trapped; the corresponding electron-electron dipolar interaction indicates that the vector which links the two components of the pair is aligned along the stacking direction and is consistent with a pair formed by two paramagnetic croconate anions separated by a (C 5O 5) 2- ring.
ISSN:1359-0197
1878-1020
DOI:10.1016/1359-0197(91)90142-O