Competition between hydrogen fluoride and hydrogen chloride molecular elimination channels in the infrared multiple-photon decomposition of 1,2-dichloro-1,1-difluoroethane.

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Abstract

Time-resolved infrared emission spectra have been measured in the infrared multiple-photon decomposition of CClF<SUB>2</SUB>CH<SUB>2</SUB>Cl. The spectra were composed of emissions attributable to vibrationally excited HF<SUP>*</SUP> and HCl<SUP>*</SUP>. The emission yield of HF<SUP>*</SUP> increased rapidly with an increase in the fluence, while the yield of HCl<SUP>*</SUP> showed a maximum at 20 J cm<SUP>−2</SUP>. These results suggest that the HF and HCl molecular elimination channels compete with each other in the unimolecular decomposition of highly vibrationally excited parent molecules. The stochastic trajectory calculations provided a satisfactory description of the fluence dependences of the HF and HCl yields observed here for CClF<SUB>2</SUB>CH<SUB>2</SUB>Cl and previously for CHClFCHClF.

Journal

  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 57(3), 681-686, 1984

    The Chemical Society of Japan

Codes

  • NII Article ID (NAID)
    130001984564
  • Text Lang
    ENG
  • ISSN
    0009-2673
  • Data Source
    J-STAGE 
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