Next, we explore the more complex reaction CH 4 + OH --→ CH 3 + H 2 O. Figure presents the computed and experimental rate constants. The latter are from the fit by Srinivasan et al., 107 which is k = 1.66 × 10 -18 T 2.182 exp(-1231 K/T ) cm 3 molecule -1 s -1 .