title: IR kinetic spectroscopy investigation of the CH4 + O(1D) reaction.
abstract: The branching of the title reaction into several product channels has been investigated quantitatively by laser infrared kinetic spectroscopy for CH(4) and CD(4). It is found that OH (OD) is produced in 67 +/- 5% (60 +/- 5%) yield compared to the initial O((1)D) concentration. H (D) product is produced in 30 +/- 10%(35 +/- 10%). H(2)CO is produced in 5% yield in the CH(4) system (it was not possible to measure the CD(2)O yield in the CD(4) case). D(2)O is produced in 8% yield in the CD(4) system (it was not feasible to measure the H(2)O yield). The ratio of the overall rate constant of the CD(4) reaction to the overall rate constant of the O((1)D) + N(2)O reaction was determined to be 1.2(5) +/- 0.1. A measurement of the reaction of O((1)D) with NO(2) gave 1.3 x 10(-10) cm(3) molecule(-1) s(-1) relative to the literature values for the rate constants of O((1)D) with H(2) and CH(4). Hot atom effects in O((1)D) reactions were observed.
authors.affiliation: Chemistry Department and Rice Quantum Institute, Rice University, Houston, Texas 77005, USA.
authors.forename: Hong-Bing
authors.initials: HB
authors.lastname: Chen
authors.forename: W D
authors.initials: WD
authors.lastname: Thweatt
authors.forename: Jinjin
authors.initials: J
authors.lastname: Wang
authors.forename: Graham P
authors.initials: GP
authors.lastname: Glass
authors.forename: R F
authors.initials: RF
authors.lastname: Curl