Abstract
The reaction of hydrogen atoms and chlorine trifluoride is studied directly by the discharge-flow EPR technique over the temperature range of 243–313 K and total pressure range of 4–8 torr. Hydrogen atoms are produced by dissociation of molecular hydrogen in a microwave discharge. Absolute rate constant data from 43 experiments at four temperatures yield the Arrhenius equation, log(kex/cm3 mol−1⋅sec−1) = (11.9±0.1) − (1470±560)/ϑ, where ϑ = 2.303 RT/J mol−1. The experimental rate constant, kex, is interpreted as a lower bound for the reaction H+ClF3→HF+ClF2.
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