The rate constant for the reaction R'+ O2-ROO'in aqueous solution was determined for 18 alkyl radicals by laser flash photolysis. The values are all at the diffusion-controlled limit and lie in the range (1.6-4.9) X lo9 L mol-'sI. The radicals studied are primary, substituted primary, secondary, and benzyl radicals.
[Rowley, David M.; Lesclaux, Robert; Lightfoot, Phillip D.; Hughes, Kevin; Hurley, Michael D.; et al. Journal of Physical Chemistry, 1992 , vol. 96, # 17 p. 7043 - 7048]