Hydrogen bonding affects the persistency of alkyl peroxy radicals.
The effect of 1,1,1,3,3,3-hexafluoro-2-phenylpropan-2-ol (HFPP) on the persistency of sec-alkyl peroxy radicals has been investigated. The formation of a hydrogen-bonding complex between HFPP and the radical resulted in a large increase in the lifetime of the radical. This variation was accompanied by a decrease in the g-value. An enthalpy change of -3.4 kcal mol-1 was estimated for the formation of the hydrogen-bonded complex.
Mugnaini
Veronica
V
Department of Organic Chemistry A. Mangini, University of Bologna, via S. Giacomo 11, I-40126 Bologna, Italy.
Lucarini
Marco
M