Kinetics of Some Gas-Phase Elementary Reactions of Boron Monofluoride

Article abstract of DOI:10.1021/j100269a036

Rate coefficients for some elementary bimolecular reactons involving the molecule BF have been measured in a gas-phase flow tube facility.The BF + Cl2 reaction was studied from 295 to 881 K; the rate coefficient is temperature-independent with value of (1.4 +/- 0.2) X 10^-11 cm³/(molecule s).Reaction of BF with O2 was studied between 675 and 1033 K; the inferred Arrhenius rate is 1.8 X 10^-11 exp(-7240/Τ) cm³/(molecule s).Room temperature rate coefficients for BF + O and BF + NO2 were determined to be (1.8 +/- 0.4) X 10^-10 and (2.1 +/- 0.3) X 10^-13 cm³/(molecule s), respectively.Uncertainties quoted are 95percent confidence limits derived from random errors in individual measurements.Reaction of BF was undetectable upon mixing with H2O, HF, CO2, NO, N2O, SO2, or CH3Cl.Upper limits are given for rate coefficients for these reactions.Boron monofluoride proved to be less reactive than other simple boron species which have been studied recently, viz, boron atoms and boron monoxide.Results for BF are compared with available rate information for reactions of isoelectronic CO and N2.