title: Investigating the chemical dynamics of the reaction of ground-state carbon atoms with acetylene and its isotopomers.
abstract: We investigated the multichannel reaction of ground-state carbon atoms with acetylene, C2H2 (X1Sigmag+), to form the linear and cyclic C3H isomers (atomic hydrogen elimination pathway) as well as tricarbon plus molecular hydrogen. The experiments were conducted under single-collision conditions at three different collision energies between 8.0 kJ mol-1 and 31.0 kJ mol-1. Our studies were complemented by crossed molecular beam experiments of carbon with three isotopomers C2D2(X1Sigmag+), C2HD (X1Sigma+), and 13C2H2 (X1Sigmag+) to clarify a potential intersystem crossing (ISC), the effect of the symmetry of the reaction intermediates on the center-of-mass angular distributions, the collision energy-dependent branching ratios of the atomic versus molecular hydrogen elimination pathways, and deuterium-enrichment processes. The results are discussed in light of recent electronic structure and dynamics calculations.
authors: Department of Chemistry, University of Hawai'i at Manoa, Honolulu, Hawaii 96822, USA.
authors: Xibin
authors: X
authors: Gu
authors: Ying
authors: Y
authors: Guo
authors: Fangtong
authors: F
authors: Zhang
authors: Ralf I
authors: RI
authors: Kaiser