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Solvent effects on the hyperfine coupling constant and barrier to internal rotation for the 2-muoxyprop-2-Yl radical

  • Molecular Structure and Dynamics, Muonium Chemistry
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Abstract

The muon-electron β-hyperfine coupling constant is reported for the 2-muoxyprop-2-yl radical formed by positive muon (μ+) implantation in propan-2-one and aqueous solutions of propan-2-one. Using the technique of muon spin rotation (μSR) spectroscopy the coupling constant was measured over a full temperature range in which the samples were in the liquid state. In all cases, the coupling constants were found to be small, and to show a positive temperature dependence. In the aqueous mixtures the presence of the water produces a slight lowering, at all temperatures, in the coupling constant with respect to the coupling in pure propan-2-one. An interpretation is given which relates the radical structure, to the barrier hindering internal rotation and to solvent interactions.

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Authors and Affiliations

  1. Chemistry Department, The University, G12 8QQ, Glasgow, Scotland

    D. Buttar, R. M. Macrae & B. C. Webster

  2. Physikalish-Chemisches Institut der Universität, CH-8057, Zürich, Switzerland

    E. Roduner

Authors
  1. D. Buttar
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  2. R. M. Macrae
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  3. B. C. Webster
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  4. E. Roduner
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Buttar, D., Macrae, R.M., Webster, B.C. et al. Solvent effects on the hyperfine coupling constant and barrier to internal rotation for the 2-muoxyprop-2-Yl radical. Hyperfine Interact 65, 927–936 (1991). https://doi.org/10.1007/BF02397744

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  • DOI: https://doi.org/10.1007/BF02397744

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