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Raman study on para nitroaniline single crystal I: Lattice vibrations
Author(s) -
Harrand M.
Publication year - 1974
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.1250020103
Subject(s) - raman spectroscopy , hydrogen bond , vibration , lattice (music) , chemistry , infrared , crystal (programming language) , lattice vibration , molecular physics , infrared spectroscopy , single crystal , depolarization , crystallography , materials science , optics , condensed matter physics , physics , molecule , phonon , quantum mechanics , organic chemistry , medicine , endocrinology , computer science , acoustics , programming language
Low frequency polarized spectra were investigated from 300 to 30K; but, as accidental depolarization arises at low temperature, study was chiefly made at 300K. External vibrations have been assigned using group theory and the influence of hydrogen bonds on the motions of the molecular layers: A g ‐ B g librations at 41.6–64.8, 83.5–42.4 and 130cm −1 , translations in‐plane at 79 and 94, out‐of‐plane at 144 cm −1 , owing to layers. Some infrared bands have been observed and assigned.