| Autor: |
Hoshino, M., Sunohara, K., Makochekanwa, C., Pichl, L., Cho, H., Tanaka, H. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 1/14/2007, Vol. 126 Issue 2, p024303, 6p, 4 Graphs |
| Abstrakt: |
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° and 15°. 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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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