Vibrational frequencies and infrared absorption intensities of 1,2-dibromoethane |
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Authors: | Kazatoshi Tanabe Jiro Hiraishi Tadao Tamura |
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Institution: | National Chemical Laboratory for Industry, Honmachi, Shibuyaku, Tokyo 151 Japan |
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Abstract: | Infrared and Raman spectra of 1,2-dibromoethane CH2BrCH2Br and CD2BrCD2Br were observed in the liquid state, and the fundamental frequencies were determined by comparison with those of related molecules. Infrared absorption intensities of fundament bands were measured in the liquid state, and the intensity data were interpreted on the basis of the valence-optical theory. From the converged value of a population ratio, the energy difference between the trans and gauche isomers was determined, which was in good agreement with the value obtained from the temperature effect of the IR spectrum. |
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