Isotope Effects in the Reaction of H〔+〕(H2O)2/D〔+〕(D2O)2 with Acetone/Dimethylsulfoxide

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  • KAWAI Yoko
    RIKEN (The Institute of Physical and Chemical Research)
  • OKADA Yoshiki
    RIKEN (The Institute of Physical and Chemical Research)
  • YAMAGUCHI Satoru
    RIKEN (The Institute of Physical and Chemical Research)
  • TAKEUCHI Kazuo
    RIKEN (The Institute of Physical and Chemical Research)
  • YAMAUCHI Yusuke
    Department of Chemistry, School of Science and Engineering, Waseda University
  • NAKAI Hiromi
    Department of Chemistry, School of Science and Engineering, Waseda University

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タイトル別名
  • Isotope Effects in the Reaction of H+(H2O)2/D+(D2O)2 with Acetone/Dimethylsulfoxide

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We investigated isotope effects in the reactions of protonated water dimer ions H+(H2O)2/D+(D2O)2 with acetone and dimethylsulfoxide (DMSO) using a guided ion beam apparatus. The reaction cross section, σr, of H+(H2O)2 with acetone was found to be slightly larger than that of D+(D2O)2 at low collision energies, <0.5 eV, where the ratio of the σr, was less than 1.5. The σr of H+(H2O)2 with DMSO was approximately twice as large as that of D+(D2O)2 with DMSO. Major reaction products were Y+X, where Y=H, D and X=acetone, DMSO. We examine two possible reaction processes, the proton transfer reaction via intermediate compounds and direct proton transfer.

収録刊行物

  • 質量分析

    質量分析 53 (6), 305-308, 2005

    一般社団法人 日本質量分析学会

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