Bulletin of the Academy of Sciences of the USSR Division of Chemical Science p. 1597 - 1601 (1989)
Update date:2022-08-11
Topics:
Tatikolov, A. S.
Sklyarenko, V. I.
Kuz'min, V. A.
Al'perovich, M. A.
The rate constants of transfer of a hydrogen atom from ketyl radicals to azomethine dyes (kH) and the rate constants of recombination of ketyl radicals (2kr) in different solvents were measured by the method of pulsed photolysis.The dependences of kH and 2kr on the polarity of the solvent are V-shaped: kH and 2kr are maximum in weakly solvating solvents and in water and are minimum in nucleophilic solvents of medium polarity.This is due to the fact that nucleophilic solvation decreases and electrophilic solvation increases the reactivity of the ketyl radicals.
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