Potential energy constants,mean-square amplitudes of vibration and rotational distortion constants for C2F4, C2Cl4 and C2Br4 |
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| Affiliation: | 1. Department of Mechanical Engineering, University Mohamed Khider, Biskra 07000, Algeria;2. Laboratory of Studies of Industrial Energy Systems, Faculty of Technology, University of Batna 2, 05000, Algeria;3. Department of Chemical Engineering, University Mohamed Khider, Biskra 07000, Algeria;1. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, 816-8580, Japan;2. Department of Mechanical Engineering, Kyushu University, Nishi-ku, Fukuoka, 819-0395, Japan |
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| Abstract: | By adopting the potential energy function of G.V.F.F. type the principal force constants for each of the perhaloethylenes C2F4, C2Cl4 and C2Br4 were refined through a best-fit iteration process. The carbon—carbon and carbon—halogen stretching force constants are discussed considering the possible effects of halogen atoms on the molecular structure. The mean-square parallel and perpendicular amplitudes of vibration at 298·16°K were computed. The rotational distortion constants were evaluated on the basis of a first-order perturbation method. |
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