title: Gas-phase kinetics of the N + C2N reaction at low temperature.
abstract: The rate of the gas-phase N((4)S) + C2N(X(2)Πi) reaction has been measured in a continuous supersonic flow reactor down to 54 K through the relative-rate method using the N((4)S) + OH(X(2)Π) → H((2)S) + NO(X(2)Π) reaction as a reference. The microwave discharge technique was employed to produce high concentrations of atomic nitrogen. Pulsed laser photolysis of precursor molecules Cl3C2N and H2O2 at 212 nm in situ led to C2N and OH radical formation, respectively. The rate constant is shown to be approximately independent of temperature, in contrast to previous studies of atom-radical reactions involving atomic nitrogen. While the reaction rate is faster than previously estimated, astrochemical simulations indicate that this reaction is probably only a minor source of CN radicals in dense interstellar clouds.
authors.affiliation: †Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, F-33400 Talence, France.|‡CNRS, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
authors.forename: James W
authors.initials: JW
authors.lastname: Stubbing
authors.affiliation: §Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy.
authors.forename: Gianmarco
authors.initials: G
authors.lastname: Vanuzzo
authors.affiliation: ∥LERMA, Université de Cergy Pontoise, 5 mail Gay Lussac, 95000 Cergy Pontoise Cedex, France.|⊥LERMA, Observatoire de Paris, PSL Research University, CNRS, UMR 8112, Sorbonne Université, UPMC Université Paris 06, Paris France.
authors.forename: Audrey
authors.initials: A
authors.lastname: Moudens
authors.affiliation: †Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, F-33400 Talence, France.|‡CNRS, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
authors.forename: Jean-Christophe
authors.initials: JC
authors.lastname: Loison
authors.affiliation: †Institut des Sciences Moléculaires, UMR 5255, Université de Bordeaux, F-33400 Talence, France.|‡CNRS, Institut des Sciences Moléculaires, UMR 5255, F-33400 Talence, France.
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Hickson