WIDE TEMPERATURE-RANGE KINETICS OF THE GAS-PHASE REACTIONS OF BCL WITH SO2, N2O, O-2, AND CO2

Rate coefficients for the title reactions have been measured in a high -temperature fast-flow reactor (HTFFR). Weighted fits give for BCl + S O2 k(470-1690 K) = 7.7 x 10(-22)(T/K)(3.0) exp(-1680 K/T) cm(3) molecu le(-1) s(-1) and for BCl + N2O k(670-1000 K) = 5.1 X 10(12) exp(-6340 K/T) cm(3) molecule(-1) s(-1). 2 sigma accuracy limits are about +/-25 %. Model-based transition-state theory (MTST) is used to calculate rat e coefficients for the O-atom abstraction channels of these reactions, as well as for the previously measured BCl reactions with O-2 and CO2 . Approximate agreement between theory and experiment is obtained for the four reactions, indicating abstraction to be dominant for each rea ction. The reactions are compared to the corresponding AlCl reactions.