The kinetics of the reaction F + H₂ → HF + H. A critical review of literature data

Published experimental studies concerning the determination of rate constants for the reaction F + H₂ → HF + H are reviewed critically and conclusions are presented as to the most accurate results available. Based on these results, the recommended Arrhenius ex-pression for the temperature range 190-376 K is κ_F+H2 = (1,1 ± 0.1) × 10^-10 exp [- (450 ± 50)/T] cm³ molecule^-1 s^-1, and the recommended value for the rate constant at 298 K is κ_F+H2 = (2.43 ± 0.15) × 10^-11 cm³ molecule^-1 s^-1 The recommended Arrhenius expression for the reaction F + D₂ → DF + D, for the same temperature range, based on the recom-mended expression for κ_F+H2 and accurate results for the kinetic isotope effect κ_F+H2/κ_F+D2 is κ_F+H2 = (1.06 ± 0.12) × 10^-10 exp [-(635 ± 55)/T]cm³ molecule^-1 s^-1, and the recom-mended value for 298 K is κ_F+D2 = (1.25 ± 0.10) × 10^-11 cm³ molecule^-1 s^-1.