Premium
Raman optical activity in carbonyl deformations
Author(s) -
Barron L. D.,
Torrance J. F.,
Vrbancich J.
Publication year - 1982
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.1250130213
Subject(s) - raman spectroscopy , raman optical activity , polarizability , cyclohexanone , context (archaeology) , chemistry , molecule , carbonyl group , deformation (meteorology) , spectral line , photochemistry , stereochemistry , organic chemistry , optics , materials science , physics , composite material , catalysis , paleontology , astronomy , biology
Abstract The contribution of carbonyl deformation co‐ordinates to normal modes is discussed in the context of the Raman optical activity of chiral molecules containing a carbonyl group attached to a cyclic system. A comparison of the Raman optical activity spectra of 3‐methylcyclohexanone and 3‐methyl methylenecyclohexane provides convincing evidence for the dominant role of carbonyl deformations in the generation of the large couplet at about 500 cm −1 in 3‐methyl cyclohexanone. The spectra of nopinone, β‐pinene and 5‐methylcyclohex‐2‐ene‐1‐one are also discussed. Finally, a model bond polarizability theory of Raman optical activity in carbonyl deformations is presented.