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Initial mode of radical pair formation in n-hydrocarbons irradiated at 1.5 and 4.2 K

✍ Scribed by Machio Iwasaki; Kazumi Toriyama; Hachizo Muto; Keichi Nunome

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 468 KB
Volume: 39
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(76)85204-9

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✦ Synopsis

The ESR-spectra of X-irradiated (at 1.5 and 4.2K) single crystals of n-decane+z, n-decanehzz and their mixtures have been measured at 1.5 and 4.2 K. It is concluded that almost all alkyi radicals are inherently formed in pairs in a fairly random fashion and that the spatial distribution of the radicals depends on the irradiation temperatures. In the crystal of n-decan,x?22, a 1,3-carbon intrachain radical pair is identified together with a number of very dose interchain pairs which are formed between almost all kinds of the &St neighboring chains. The crystal of n-decane=+ gives considerably larger spatial distribution of radicals, indicating a remarkable mass effect on the . radical pair formation.

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