Journal of Organic Chemistry p. 1004 - 1008 (1980)
Update date:2022-08-11
Topics:
Brower, K.R.
The rate of thermolysis of liquid bibenzyl to toluene and stilbene has been measured as a function of temperature and pressure with upper limits of 400 deg C and 1000 atm (101 MPa).The activation parameters are Eact = 63 kcal, Sact = +9 eu, and Vact = +31 mL.They are consistent with a rate-controlling step involving formation of a widely separated pair of benzyl radicals.The Vact is interpreted in the light of cage effects, and the conventional treatment of diffusive separation and recombination of radical pairs as activated process is called into question.
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