Abstract
Abstract Arene/chlorine atom π-complexes were generated by pulse radiolysis of a wide variety of substituted benzenes in carbon tetrachloride at room temperature. Upon laser flash photolysis of the π-complexes, intramolecular hydrogen abstraction was observed in times much shorter than the flash time (6 ns), with quantum yields between 0.05 and 0.18 depending on the sort and the number of the substituents but not on their positions. The effects of substituents on the photochemistry of arene/chlorine atom π-complexes were discussed in connection with the bond dissociation energy of the related atoms and with the structure of the π-complexes.
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