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Vibrational spectra and intramolecular vibrational redistribution in methane and its isotopomers |
| Hou Xi-Wen (侯喜文)a, Wan Ming-Fang (万明芳)b, Ma Zhong-Qi (马中骐)c |
a Department of Physics, Huazhong Normal University, Wuhan 430079, China;
b School of Natural Science, Wuhan University of Technology, Wuhan 430079, China;
c Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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Abstract An improved U(2) algebraic model is introduced to study the stretching and bending vibrational spectra of methane and its isotopomers. The algebraic model with fewer parameters reproduces the experimental spectra with good precision. Moreover, the obtained parameters describe well the correct behavior of isotopic substitution. It is shown that the Fermi resonance leads to a very fast intramolecular vibrational redistribution among stretches and bends.
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Received: 24 January 2012
Revised: 12 March 2012
Accepted manuscript online:
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PACS:
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33.20.Tp
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(Vibrational analysis)
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34.30.+h
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11174099). |
Corresponding Authors:
Hou Xi-Wen
E-mail: xwhou@phy.ccnu.edu.cn
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Cite this article:
Hou Xi-Wen (侯喜文), Wan Ming-Fang (万明芳), Ma Zhong-Qi (马中骐) Vibrational spectra and intramolecular vibrational redistribution in methane and its isotopomers 2012 Chin. Phys. B 21 103301
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