The Reactions of Ch₃ and Cd₃ Radicals With Hydrogen and Deuterium

The reaction of CH 3 and CD 3 radicals with hydrogen and deuterium have been investigated, acetone being used as a source of methyl radicals. The results indicate (1) that the substitution of D 2 for H 2 has a considerable effect, (2) the substitution of CD 3 for CH 3 has relatively little effect. (3) It is concluded that, contrary to the results of Burton et al., the activation energy of the reaction[Formula: see text]is 9.7 ± 0.6 kcal.