Infrared chemiluminescent reactions of halogen atoms with hydrogen sulfide and methanethiol

Kinetics of the reactions of atomic chlorine with H2S, D2S, CH3SH, and CD3SD

“…0.05. The H-D kinetic isotope effect for reaction (2) has not been investigated. Temperaturedependent kinetic data are available only for reaction (1) [8, 91; reported activation energies from both temperature-dependence studies are zero.…”

“…Reactions (1) and (2) are also of some interest in atmospheric chemistry, as evidenced by the fact that they are included in compilations of kinetic and photochemical data for use in atmospheric modeling [13,141. Despite the large number of studies (see above), the kinetic data base for reactions (1) and (2) and their deuterium substituted analogs, i.e., reactions (3) and (41, is rather sparse. At room temperature, several measurements of k l have been carried out [3,4,6-91, but reported rate coefficients span a range of more than a factor of 2.5, i.e, (4.0-10.5) x cm3molecule-1s-1; one reported measurement of k3 (298 K) [121 suggests that the H-D kinetic isotope effect may be substantial.…”

High-temperature kinetics of the reaction between chlorine atoms and hydrogen sulfide

“…Dill and Heydtmann generated Cl atoms in a discharge through Cl2 at low pressures and detected infrared chemiluminescence (IRCL) from HCl in v>0 [3]. Leone and co-workers used laser flash photolysis (LFP) of precursor molecules to generate atomic chlorine, and monitored the IRCL of the HCl product, attributed mainly to HCl in the v=1 and v=2 states [4,5].…”

Nascent HF† and HSO(2A′) formations in the elementary reactions of F + H2S and HS + O3 and the internal energy distributions

“…This result indicates that the two distributions show a similar tendency on the whole except for a smaller population in the J = 0 level in the present study. The fast-flow reactor and the arrested relaxation studies also gave similar HF rotational distributions which extend to the thermochemical limit for several vibrational levels (21(c), 22). The present result seems to be in better agreement with the distribution in the arrested relaxation method than the one in the fast-flow reactor.…”