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Raman spectra and normal vibrations of dipeptides. I. Glycylglycine

✍ Scribed by P. Lagant; G. Vergoten; M. H. Loucheux-Lefebvre; G. Fleury

Publisher
Wiley (John Wiley & Sons)
Year
1983
Tongue
English
Weight
551 KB
Volume
22
Category
Article
ISSN
0006-3525

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✦ Synopsis

We studied the Raman spectra of the zwitterionic glycylglycine crystal (GG) and its Ndeuterated analog. A normal coordinate analysis on its a-crystalline form was performed and the effects of intra-and intermolecular couplings are discussed. A modified Urey-Bradley potential was used as a model of the intramolecular force field. Factor group splittings are described by the use of intermolecular potentials consisting of nonbonded atom-atom interactions and dipole-dipole interactions. Effects of hydrogen bonds on the vibrational frequencies of amino and carboxylate groups are also analyzed.

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