Non-Arrhenius behavior of the F+H2 reaction rate at 293–700 K

Abstract Non-Arrhenius behavior was observed in the temperature range 293–700 K for the absolute rate constant for the reaction F + H 2 using an EPR spectrometer combined with a fast-flow system. The measured rate constant (in cm 3 /s) fits the expression k = 2.9 × 10 −13 T exp[−(1390±440)/ RT ].