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Science China Chemistry

, Volume 55, Issue 3, pp 359–367 | Cite as

Photodissociation of acryloyl chloride in the gas phase

  • ChunFan Yang
  • WeiQiang Wu
  • KunHui Liu
  • Huan Wang
  • HongMei Su
Articles

Abstract

The 193 nm photodissociation dynamics of CH2CHCOCl in the gas phase has been examined with the technique of time-resolved Fourier transform infrared emission (TR-FTIR) spectroscopy. Vibrationally excited photofragments of CO (ν ⩽ 5), HCl (ν ⩽ 6), and C2H2 were observed and two photodissociation channels, the C-Cl fission channel and the HCl elimination channel have been identified. The vibrational and rotational state distributions of the photofragments CO and HCl have been acquired by analyzing their fully rotationally resolved νν−1 rovibrational progressions in the emission spectra, from which it has been firmly established that the mechanism involves production of HCl via the four-center molecular elimination of CH2CHCOCl after its internal conversion from the S1 state to the S0 state. In addition to the dominant C-Cl bond fission along the excited S1 state, the S1→S0 internal conversion has also been found to play an important role in the gas phase photolysis of CH2CHCOCl as manifested by the considerable yield of HCl.

Keywords

TR-FTIR photodissociation vibrational and rotational state distribution four-center elimination internal conversion 

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Copyright information

© Science China Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • ChunFan Yang
    • 1
  • WeiQiang Wu
    • 1
  • KunHui Liu
    • 1
  • Huan Wang
    • 1
  • HongMei Su
    • 1
  1. 1.State Key Laboratory of Molecular Reaction Dynamics; Beijing National Laboratory for Molecular Sciences (BNLMS); Institute of ChemistryChinese Academy of SciencesBeijingChina

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