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Far-infrared spectra of N-methylacetamide and related compounds and hydrogen-bond force constants

✍ Scribed by Koichi Itoh; Takehiko Shimanouchi

Publisher
Wiley (John Wiley & Sons)
Year
1967
Tongue
English
Weight
443 KB
Volume
5
Category
Article
ISSN
0006-3525

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✦ Synopsis

Far-infrared spectra of N-methylacetamide and other monosubstituted amides were measured in the liquid state in the region from 250 to 60 cm. -I. Bands characteristic of the molecules with a peptide bond were found and assigned to the hydrogen-bond vibration and the C--N torsional vibration. Far-infrared and Raman spectra of crystalline N-methylacetamide were measured. The normal coordinate treatment for the low-temperature modification of crystalline N-methylacetamide was made. A reasonable set of force constants can explain all the spectra and their change due to the modification transition.

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