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Infrared and Raman spectral studies of L ‐ornithine nitrate
Author(s) -
Ramaswamy S.,
Umadevi M.,
Rajaram R. K.,
Ramakrishnan V.
Publication year - 2003
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.1055
Subject(s) - raman spectroscopy , chemistry , hydrogen bond , nitrate , intermolecular force , ion , infrared spectroscopy , crystallography , infrared , crystal (programming language) , ornithine , crystal structure , inorganic chemistry , stereochemistry , molecule , organic chemistry , arginine , amino acid , physics , biochemistry , computer science , optics , programming language
FT‐IR and FT‐Raman spectra of L ‐ornithine nitrate were recorded and analyzed. The assignments of the fundamental vibrational modes due to COO − , NH 3 + , CH 2 , CH, CN and NO 3 − groups were made. The carboxylic group is found to exist as the COO − ion in the crystal. The formation of N–HO hydrogen bonds in the crystal contributes considerably to the crystal cohesion. The wavenumbers of several modes of vibrations were shifted from the expected values, indicating extensive intermolecular hydrogen bonding. Some of the forbidden modes of the nitrate group have been observed. The removal of degeneracy of the nitrate anion suggests that the symmetry of the nitrate group has been affected in the crystalline environment. Copyright © 2003 John Wiley & Sons, Ltd.