Abstract: | The rate constants of the unimolecular decomposition of the pivaloyl radical (kD) and of the bimolecular self terminations of pivaloyl (k1) and t-butyl radicals (k2) in liquid methylcyclopentane are determined by ESR.-spectroscopy: The viscosity dependence of (k2) is analysed with respect to diffusion control of the reaction. Comparison of (kD) values of different acyl radicals reveals a strong dependence of the activation energies on radical structure. |