(b).

Energetics derived from fitting the TSE to the temperature dependence of selected microscopic rate coefficients (the errors from the fit are given in parentheses).

Microscopic rate coefficients	k 3 †	k 4 †	k 5 †	k 8
ΔH # (kJ mol−1)	24.7	48.1	50.0	75.2 (0.03)
ΔS # (J mol−1 K−1)	−9.4	−10.2	−14.8	41.9 (0.08)
TΔS # ‡ (kJ mol−1)	−2.8	−3.1	−4.5	12.6 (0.02)
ΔG # ‡ (kJ mol−1)	27.5	51.2	54.5	62.7 (0.09)