Hydrogen abstraction by methyl radicals from benzene and the pressure dependence of the recombination of methyl radicals

Abstract

With dimethyl mercury and dimethyl cadmium as sources of methyl radicals, values of k1/k21/2 for the reactions [Formula: see text] [Formula: see text]have been calculated from 471 to 527 °C over the pressure range 0.3 to 16.2 cm. Extrapolation to the effective infinite pressure region, where it is assumed that E2 = 0, gives E1 = 9.3 kcal mole−1, log A1 = 10.8 (cc mole−1 s−1).