The Methyl Rotational Potentials of Various Isotopic Methyl Iodides and Their Coupling to Phonons

  • M. Prager
  • J. Stanislawski
  • W. Häusler
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 17)

Abstract

The rotational potentials of methyl groups in protonated and deuterated methyl iodide were determined from the observed tunnel splittings and the librational energies. The potential becomes stronger in the deuterated matrix by about 10 %. For pure CD3I the isotope effect on the librational modes shows a considerable further increase. No rotor-rotor coupling is found. The coupling to low-frequency phonons can explain the unusual increase of the tunnel splitting with temperature observed for T < 15 K.

Keywords

Methane Lithium Iodide Halide Prolate 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • M. Prager
    • 1
  • J. Stanislawski
    • 1
  • W. Häusler
    • 2
  1. 1.Institut für Festkörperforschung der Kernforschungsanlage JülichJülichFed. Rep. of Germany
  2. 2.Institut für Theoretische PhysikUniversität Erlangen-NürnbergErlangenFed. Rep. of Germany

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