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Ortho-m meta-, para-directional effects in muonium addition to benzoic acid in water

  • Molecular Structure and Dynamics, Muonium Chemistry
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Abstract

Isomeric free radicals formed by Mu adding to o/m/p positions of benzoic acid in water were detected by LCR and the corresponding resonance positions and proton hyperfine coupling constants were obtained. There was an isotope effect of the ‘second kind’ for these Mu-radicals in the range of 1.26–1.32. The ‘fractional’ formation rate constants per site are 2.7×109, 0.45×109 and 0.85×109 M−1s−1 respectively. Ortho-addition dominates by a large factor, which is in accord with the electron-withdrawing character of the −COOH group.

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Authors and Affiliations

  1. Chemistry Department and TRIUMF, University of British Columbia, V6T 1Y6, Vancouver, B.C., Canada

    John M. Stadlbauer, Mary V. Barnabas, Zhennan WU & David C. Walker

Authors
  1. John M. Stadlbauer
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  2. Mary V. Barnabas
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  3. Zhennan WU
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  4. David C. Walker
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Stadlbauer, J.M., Barnabas, M.V., Zhennan, W. et al. Ortho-m meta-, para-directional effects in muonium addition to benzoic acid in water. Hyperfine Interact 65, 939–943 (1991). https://doi.org/10.1007/BF02397746

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  • DOI: https://doi.org/10.1007/BF02397746

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