Calculated barriers for spontaneous scission of fully hydrogenated toluene (red) into ^•C₆H₁₁ and ^•CH₃. Scission of fully hydrogenated toluene into ^•CH₃ and cyclohexane given the incidence of hydrogen onto the alpha carbon (green; see Fig. 7(ii)). Scission of fully hydrogenated toluene into ^•C₆H₁₁ and CH₄ given the incidence of atomic hydrogen upon the methyl group (orange; see Fig. 7(i)). The energies for these products and the corresponding transition states are labelled relative to methylcyclohexane.