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Hyperfine anisotropy and crystal field effects in Mu adducts to naphthalene

  • Molecular Structure and Dynamics, Muonium Chemistry
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Abstract

Muonated cyclohexadienyl type radicals have been studied in a naphthalene single crystal using the standard transverse-field μSR technique. Muonium addition occurs at both the α and the β positions. Because of the multiplicity and weakness of the lines in the Fourier spectrum, special techniques were developed to allow the signals to be found and identified. The isotropic hyperfine coupling constants show large shifts from the solution values, with significant anisotropy in the hyperfine tensors. The results for the α radicals are similar to those observed for protonated α-hydronaphthyl radicals, but isotope effects are evident. Based on the hyperfine tensor directions and geometrical considerations, each radical has been assigned to a specific muon site within the crystal.

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Author notes

  1. Ivan D. Reid

    Present address: Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland

Authors and Affiliations

  1. Physikalish-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057, Zürich, Switzerland

    Ivan D. Reid & Emil Roduner

Authors
  1. Ivan D. Reid
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  2. Emil Roduner
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Reid, I.D., Roduner, E. Hyperfine anisotropy and crystal field effects in Mu adducts to naphthalene. Hyperfine Interact 65, 891–900 (1991). https://doi.org/10.1007/BF02397741

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  • DOI: https://doi.org/10.1007/BF02397741

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