Rate constants for alkyl radical recombination. II. The isopropyl radical

Products of radical combination from the free‐radical buffer system \documentclass{article}\usepackage{amssymb}\pagestyle{empty}$${{\rm R}^{\rm .} + {\rm R}^{\rm '} {\rm I}\mathop {\leftrightharpoons}\limits^{{\rm K}_{{\rm RR}}}{\rm RI} + {\rm R}^{'}}$$ . have been analyzed for the two cases, R = Me, R′ = iPr and R = Et, R′ = iPr. Results are consistent with the previously examined system where R = Me, R′ = Et, and give a value of k_P for iPr· combination of 10^8.6±1.1 M⁻¹ sec⁻¹.