Spectrum and Mutual Kinetics of HOCH2CH2O2 Radicals

Article abstract of DOI:10.1021/j100168a016

β-Hydroxyethyl peroxy radicals have been studied by using pulse radiolysis to generate the radicals and kinetic absorption to monitor their formation and decay.The ultraviolet absorption spectrum assigned to HOCH2CH2O2 is broadband in nature with a maximum absorption cross section of 3.5 (+/-0.6) * 10^-18 cm² molecule^-1 at 230 nm.An overall rate constant for the self-reaction 2 HOCH2CH2O2 -> HOCH2CH2OH + HOCH2CHO + O2 (3a), 2 HOCH2CH2O2 -> 2 HOCH2CH2O + O2 (3b) of k₃ = 7.7 (+/-1.2) * 10^-12 cm³ molecule^-1 s^-1 was measured at room temperature together with an estimation of the branching ratio, k_3a/k₃ = 0.75 (+/-0.1).