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Free radicals in γ-irradiated olefinic silica compounds

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Theoretical and Experimental Chemistry Aims and scope

Abstract

Results are reported from γ-irradiation of compounds of structure

. each of which gives a characteristic ESR spectrum having a hyperfine structure whose resolution is somewhat reduced by the coupling of the radical to the silica. The splittings are 23–25 Oe (typical of alkyl radicals), except for the phenyl compound. Improved resolution is provided by varying the temperature between −196 and 20‡C. The bond to the surface gives the radical high thermal stability; contact with air at 20‡C converts the alkyl radicals to peroxyl ones. Hyperfine splitting from the hydrogen ΔHp ≅ 5000 Oe is observed in all compounds except

.

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Authors and Affiliations

  1. Pisarzhevskii Institute of Physical Chemistry, Academy of Sciences, UkrSSR, Kiev

    T. N. Burushkina & A. A. Chuiko

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  1. T. N. Burushkina
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  2. A. A. Chuiko
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Burushkina, T.N., Chuiko, A.A. Free radicals in γ-irradiated olefinic silica compounds. Theor Exp Chem 1, 255–257 (1965). https://doi.org/10.1007/BF01134331

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