VIBRATIONAL SPECTRA OF 4-PYRIDONE AND ITS 2,3,5,6-TETRADEUTERO, N-DEUTERO, N-METHYL, N-CYANO, AND 3,5-DIHALOGENO DERIVATIVES . MIXING BETWEEN C=C AND C=O STRETCHING VIBRATIONS

被引：21
作者：
BATTS, BD
SPINNER, E
机构：
[1] Department of Medical Chemistry, John Curtin School of Medical Research, Australian National University, Canberra, ACT
来源：
AUSTRALIAN JOURNAL OF CHEMISTRY | 1969年 / 22卷 / 12期
关键词：
D O I：
10.1071/CH9692581
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The infrared spectra of the above compounds, and the Raman spectra of the parent compound and its 2,3,5,6-D4, 1-D, and 1-Me derivatives have been determined. The effects of electron-withdrawing infstituents, N-methylation, and deuteration on the two intense infrared bands in the 1480–1650 cm−1 region are not compatible with one being a C=O and the other a C=C stretching band. These two vibrations must be extensively mixed; occasionally very pronounced medium effects, which are not straightforward, are observed for one or both of these bands. The spectra are not in accord with a mostly zwitterionic (N-protonated pyrid-4-oxide) structure (II) of 4-pyridone. Band assignments are made for the parent compound. © 1969, CSIRO. All rights reserved.
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页码：2581 / &
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