Rotational Tunneling of Matrix-Isolated Tetramethyl Compounds

  • W. Langel
  • O. Schrems
  • E. Knözinger
  • M. Prager
Part of the Springer Proceedings in Physics book series (SPPHY, volume 17)


Sn(CH3)4 was isolated in solid argon, krypton and SF6, and Pb(CH3)4 in argon. Tunneling transitions are reported at 68 and 83 μeV for Sn(CH3)4 and 290 μeV for Pb(CH3)4 in argon. In Kr and SF6 matrices no well-defined tunneling transitions were observed, probably due to disorder in the packing site. Hindrance potentials for the methyl group rotation with a high sixfold contribution are found, since the tunneling methyl groups are parallel to 111-planes of the argon lattice and thus face a symmetric environment. Furthermore, the assignments of ν8, ν19 and of a mode at 11 meV are discussed on the basis of far-IR data.


Bulk Phase Torsional Mode Argon Atom Tunneling Line Tunneling Transition 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • W. Langel
    • 1
  • O. Schrems
    • 1
  • E. Knözinger
    • 1
  • M. Prager
    • 2
  1. 1.Institut für Physikalische ChemieUniversität SiegenSiegenFed. Rep. of Germany
  2. 2.Institut für Festkörperforschung der Kernforschungsanlage JülichJülichFed. Rep. of Germany

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