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Title: ジメチルケトン,メチルエチルケトン,ジエチルケトン,ジメチルアミンおよびジエチルアミンのRaman,IRならびにNMR
Other Titles: The Raman, IR and NMR of Dimethyl, Methylethyl, and Diethyl Ketone and Dimethyl, and Diethyl Amine
Authors: 浜田, 圭之助 / 森下, 浩史
Authors (alternative): Hamada, Keinosuke / Morishita, Hirofumi
Issue Date: 28-Feb-1977
Publisher: 長崎大学教育学部
Citation: 長崎大学教育学部自然科学研究報告. vol.28, p.51-58; 1977
Abstract: The authors obtain the Raman, IR and NMR spectra of CH3-CO-CH3, CH3-CO- -C2H5, C2H5-CO-C2H5, CH3-NH-CH3 and C2H5-NH-C2H5. The spectra have been analysed on the basis of a bent structure, but the present observations show that the obtained spectra can be explained on the basis of a non-rigid linear structure, in which CH2 group rotates freely with respect to the three hydrogen atoms of CH3 group. Because the observations are in good agreement with theoretical expectations for a nonrigid D3d model for R-CO-R and R-NH-R (R=CH3, C2H5) and for a non-rigid C3v model for CH3-CO-C2H5. A non-rigid structure is strongly supported by the NMR spectra. It seems to the authors sufficient evidence to justify a non-rigid linear model for C2H5-COC2H5 and CH3-CO-C2H5 that the both spectra are too simple to be explained on the basis of a bent model and that the coincidence between Raman and infrared frequencies which is the one of spectral features of C3v symmetry for CH3-CO-C2H5 occurs and the lack of coincidence between Raman and infrared frequencies which is the drastic one of spectral features of D3d symmetry with a symmetry center for C2H5-CO-C2H5 and C2H5-NH-C2H5 except in the frequencies due to CH2 group occurs.
URI: http://hdl.handle.net/10069/32786
ISSN: 0386443X
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:No. 28

Citable URI : http://hdl.handle.net/10069/32786

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