The potential energy surface for the gas-phase CH 4+ OH→ CH 3+ H 2 O reaction and its
deuterated analogs was constructed with suitable functional forms to represent vibrational
modes, and was calibrated by using the experimental thermal rate constants and kinetic
isotope effects. On this surface, the forward and reverse thermal rate constants were
calculated using variational transition-state theory with semiclassical transmission
coefficients over a wide temperature range, 200–2000 K, finding reasonable agreement with …