Far Infrared Spectra and Internal Rotation of Ethyl Fluoride and Deuterated Species
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概要
- 論文の詳細を見る
Far infrared spectra were measured of ethyl fluoride CH<SUB>3</SUB>CH<SUB>2</SUB>F and deuterated species CH<SUB>3</SUB>CD<SUB>2</SUB>F, CD<SUB>3</SUB>CH<SUB>2</SUB>F, and CD<SUB>3</SUB>CD<SUB>2</SUB>F in the gaseous state. The potential barriers hindering the internal rotation were calculated with various models. Possibly because of isotope effects on structure relaxations due to torsional motion and to zeropoint motion of other vibrational modes, the observed potential barriers are slightly different among isotopic molecules; the threefold barrier is lowered on the deuteration of the methyl group. The absorption intensities of the four isotopic species were also measured. The intensity of the torsional vibration of the methyl group is nearly doubled on deuteration of the methyl group but is reduced on deuteration of the methylene group. The observed intensity ratios among isotopic species were in good agreement with the ratios calculated with the intensity theory of our previous study.
- 公益社団法人 日本化学会の論文
著者
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Miyazawa Tatsuo
Institute for Protein Research Osaka University
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Sugeta Hiromu
Institute for Protein Research, Osaka University
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Adachi Yoshio
Institute for Protein Research, Osaka University
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