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Low energy electron energy-loss spectroscopy of CF3X (X=Cl,Br).

Authors
  • Hoshino, M
  • Sunohara, K
  • Makochekanwa, C
  • Pichl, L
  • Cho, H
  • Tanaka, H
Type
Published Article
Journal
The Journal of Chemical Physics
Publisher
AIP Publishing
Publication Date
Jan 14, 2007
Volume
126
Issue
2
Pages
24303–24303
Identifiers
PMID: 17228950
Source
Medline
License
Unknown

Abstract

We report threshold electron energy-loss spectra for the fluorohalomethanes CF3X (X=Cl,Br). Measurements were made at incident electron energies of 30 and 100 eV in energy-loss range of 4-14 eV, and at scattering angles of 4 degrees and 15 degrees. Several new electronic transitions are observed which are ascribable to excitation of low-lying states as well as are intrinsically overlapped in the molecules themselves. Assignments of these electronic transitions are suggested. These assignments are based on present spectroscopic and cross-section measurements, high-energy scattering spectra, and ab initio molecular orbital calculations. The calculated potential curves along the C-X bond show repulsive nature, suggesting that these transitions may lead to dissociation of the C-X bond. The present results are also compared with the previous ones for CF3H, CF4, and CF3I.

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