Abstract
During UV irradiation of benzoquinones and diphenoquinones in the presence of diphenylamine (DPA) or its tert-butyl deriatives there is a photoreduction of the carbonyl group. As a result of transfer of an H atom there are formed neutral radicals, stable under low-temperature photolysis, which join into radical pairs of various types [i, 2], the structure of which is assumed to be identical with the structure of the corresponding molecular complexes. Conclusions on the structure of the radicals and supposed complexes are based purely on ESR, and there are no x-ray structural data for these complexes and their donor components tertbutyl-substituted DPA. We have therefore made an x-ray structural investigation of 2-tertbutyldiphenylamine (I).
Published Version
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