期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 21, 期 3, 页码 1528-1535出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cp06668j
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资金
- Army Research Office [W911NF-17-1-0099]
Infrared multiphoton excitation is combined with UV excitation and state-resolved probes of Cl(P-2(3/2)), Cl*(P-2(1/2)), and HCl to study the photochemistry of propargyl chloride. The results show evidence both of infrared multiphoton dissociation on the ground electronic state and infrared multiphoton excitation followed by UV dissociation. The results are interpreted with the aid of a full characterization of the stationary points on the ground state using ab initio methods, as well as our recent experimental and theoretical characterization of the UV photochemistry of the molecule. The data suggest elimination of HCl on the ground electronic state produces linear propadienylidene as a coproduct over a roaming-like transition state that accesses the Cl-H-C abstraction geometry. This identification is supported by separate chirped-pulse microwave studies in a quasi-uniform flow also reported here.
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