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IR-bandenstrukturanalyse der amidstreckschwingungen von N-methylacetamid als modellsubstanz für makromoleküle mit peptidbindungen (1983)

Hummel, Helmut ; Bonart, Richard

New York : Wiley-Blackwell

Die Makromolekulare Chemie 184 (1983), S. 2693-2704

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ISSN: 0025-116X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: The C=0 and N—H stretching vibrations of N-methylacetamide in solution were studied at different concentrations and temperatures. By means of bandfitting and using the second derivative, the C=O stretching band (Amide I) was resolved into four component bands. An assignment of these frequencies is discussed. The band splitting of amide I indicates the presence of cis-trans isomerism about the peptide (—CO—NH—) link and a frequency shift of the free C=O end groups of associated molecules. The H-bond enthalpy seems to be influenced by the chain length of the associates.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/macp.1983.021841226

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