FORMATION OF SEMIQUINONE RADICALS BY ULTRAVIOLET IRRADIATION OF PYRIMIDINES IN METHANOL |
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| Authors: | A. Castellano J. P. Catteau A. Lablache-Combier G. Allan |
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| Affiliation: | Laboratoire de Chimie Organique Physique, Universitédes Sciences et Techniques de Lille;B.P. 36 59650—Villeneuve d'Ascq, France;I.S.E.N., rue F. Baès 59000—Lille, France |
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| Abstract: | Abstract —Ultraviolet irradiation of pyrimidine and 4- and 5-methylpyrimidine in methanol at 113 K gave the corresponding semiquinone radicals in a monophotonic process. It is likely that this process involves an n * triplet state of the photoexcited pyrimidines. |
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