Premium
Raman and infrared spectral studies of DL ‐threoninium dihydrogenphosphate
Author(s) -
Ravikumar B.,
Ramaswamy S.,
Mohamed Ali Jinnah M.,
Rajaram R.K.,
Ramakrishnan V.
Publication year - 2004
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.1222
Subject(s) - raman spectroscopy , intermolecular force , hydrogen bond , infrared , chemistry , crystal (programming language) , infrared spectroscopy , crystallography , molecular vibration , ion , molecule , optics , organic chemistry , physics , computer science , programming language
Infrared and Raman spectra of DL ‐threoninium dihydrogenphosphate crystal were recorded at room temperature and vibrational assignments of the observed wavenumbers were made. The extensive intermolecular hydrogen bonding in the crystal was identified by the shifting of bands due to the stretching and bending modes of the various functional groups. The T d symmetry of the phosphate anion is reduced to the lower symmetry C 2 v owing to the intermolecular hydrogen bonding and coordination. The splitting of degenerate modes and the appearance of infrared‐inactive modes indicate the effect of the crystalline field on molecular vibrations. Copyright © 2004 John Wiley & Sons, Ltd.