Considerable configurational stability even for the radical, which should allow radical transformations with retention of configuration, is one of the most striking results obtained in a theoretical investigation into the structure and energetics of reactive intermediates in the chemistry of arene–Cr(CO)3 complexes (see picture), such as the benzylic anions, cations, and radicals, by using density functional methods.
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Pfletschinger et al. (1999) studied this question.