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Vibrational spectrum and structure of nido-carborane 11-CH3-2,7-C2B9H12

  • L. I. Leites
  • S. S. Bukalov
  • L. E. Vinogradova
  • S. P. Knyazev
  • Yu. A. Strelenko
Physical Chemistry

Conclusions

  1. 1.

    The full vibrational spectra of the nido-carborane 11-CR3-2, 7-C2B9H12 and its μ-dideutero derivative were obtained. An assignment is proposed for some of the frequencies.

     
  2. 2.

    The Raman spectrum contained broad bands belonging to the stretching vibrations of the extra-hydrogens. Their frequencies lie at the high-frequency edge of the broad range which (according to published data) corresponds to the vibrations of the BHB bridging bonds.

     
  3. 3.

    It was found that the frequencies for the stretching vibrations of the outer σ bonds, starting from the atoms of the open face, are reduced in comparison with the analogous bonds in the closed part of the polyhedron.

     
  4. 4.

    Unlike icosahedral closo-carboranes, the nido-carborane 11-CH3-2,7-C2B9H12 does not form a plastic phase at 293°K but exists in the form of an ordered crystal.

     

Keywords

Raman Spectrum Broad Band Vibrational Spectrum Closed Part Analogous Bond 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • L. I. Leites
    • 1
    • 2
  • S. S. Bukalov
    • 1
    • 2
  • L. E. Vinogradova
    • 1
    • 2
  • S. P. Knyazev
    • 1
    • 2
  • Yu. A. Strelenko
    • 1
    • 2
  1. 1.A. N. Nesmeyanov Institute of Heteroorganic CompoundsAcademy of Sciences of the USSRMoscow
  2. 2.State Scientific-Research Institute of Chemistry and Technology of Heteroorganic CompoundsMoscow

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