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Raman spectra of iodine derivatives of tyrosine and thyronine
Author(s) -
Loh Eugene
Publication year - 1975
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.1250030403
Subject(s) - raman spectroscopy , chemistry , thyronine , ring (chemistry) , iodine , spectral line , plane (geometry) , benzene , crystallography , computational chemistry , organic chemistry , optics , physics , geometry , biochemistry , mathematics , hormone , triiodothyronine , astronomy
The Raman spectra of iodine derivatives of tyrosine and thyronine exhibit strong peaks in the region ≲400 cm −1 and may be described by analogous vibrations of benzene as: (i) the C—I out‐of‐plane bendings of E 1 g mode from 120 cm −1 to 180 cm −1(ii) the C—I in‐plane bendings of E 2 g and A 2 g mode from 190 cm −1 to 330 cm −1 and (iii) the C—I stretchings of E 2 g mode from 240 cm −1 to 400 cm −1In triiodo‐derivatives, the number of both the CI in‐plane bendings and CI stretchings on the inner phenyl ring approximately doubles from that of diiodo‐derivatives presumably due to the modulation caused by the iodine‐sensitive libration of the outer phenyl ring.