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Vibrational analysis of peptides, polypeptides and proteins. XII—fermi resonance analysis of the unperturbed ND stretching fundamental in polypeptides
Author(s) -
Krimm S.,
Dwivedi Anil M.
Publication year - 1982
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250120209
Subject(s) - fermi resonance , resonance (particle physics) , chemistry , raman spectroscopy , fermi gamma ray space telescope , alanine , deuterium , nuclear magnetic resonance , crystallography , atomic physics , amino acid , physics , condensed matter physics , optics , biochemistry
We have obtained the spectrum of β‐poly(L‐alanine‐ND), and find three bands in the ND stretching region. By comparison with Fermi resonance analyses of deuterated derivatives of polyglycine I as well as with α‐poly(L‐alanine‐ND), we conclude that a three‐level Fermi resonance is involved in the β polypeptide, and that the unperturbed ND stretch fundamental occurs near 2428 cm −1 .