Rate constants for the termination of benzyl radicals in solution
1979; Wiley; Volume: 11; Issue: 7 Linguagem: Inglês
10.1002/kin.550110704
ISSN1097-4601
AutoresM. Lehni, Hans‐Herbert Schuh, Hanns Fischer,
Tópico(s)Radical Photochemical Reactions
ResumoAbstract The rate constant for the bimolecular combination of benzyl radicals in cyclohexane and toluene is determined as a function of temperature. Further, it is studied in cyclohexane–toluene mixtures of different compositions. In the entire range covered, 9.8 × 10 8 ⩽ 2 k t ⩽ 9.0 × 10 9 M −1 ·sec −1 , the data are very well described by the Smoluchowski equation for a diffusion‐controlled reaction to ground‐state products using a spin statistical factor of 1/4, a temperature‐ and solvent‐independent reaction distance, and the known diffusion coefficient of toluene.
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