Journal of the American Chemical Society p. 4483 - 4489 (1981)
Update date:2022-08-06
Topics:
Korth, Hans-Gert
Trill, Heinrich
Sustmann, Reiner
Syn and anti <1-2H>allyl radicals are generated from deuterated allyl phosphites by attack of tert-butoxy radicals, and their interconversion is studied in the temperature range of 50-100 deg C.Steady-state kinetic analysis together with time-resolved measurements of the diffusion-controlled recombination kinetics yield an allyl rotational barrier of 15.7 +/- 1.0 kcal/mol (logA = 13.5 +/- 0.5).From this a value of 14.0-14.5 kcal/mol is deduced for the allyl delocalization energy.
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