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Infrared and Raman spectra of 2,3‐dimethylaniline
Author(s) -
Shukla A. R.,
Pathak C. M.,
Dongre N. G.,
Asthana B. P.,
Shamir Jacob
Publication year - 1986
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.1250170402
Subject(s) - dimethylaniline , raman spectroscopy , molecule , intermolecular force , chemistry , hydrogen bond , spectral line , infrared spectroscopy , infrared , polarization (electrochemistry) , crystallography , photochemistry , physics , organic chemistry , optics , astronomy
The infrared spectra of 2,3‐dimethylaniline in different phases have been recorded in the region 4000–100 cm −1 . In the solid phases at 223 and 123 K, however, the spectra were recorded in the region 4000–400 cm −1 only. Raman spectra with polarization measurements have been recorded and investigated for the first time. New frequency assignments are proposed, assuming the molecule to possess an approximate C s symmetry; 52 out of a possible 54 normal modes in the molecule have been observed and assigned, including 25 hitherto unreported modes. The observed spectral changes give evidence of a solid‐solid phase transition in the molecule between 223 and 123 K and indicate the presence of intermolecular hydrogen bonding due to the presence of an amino group in the molecule.