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Interpretation of the vibrational modes of uracil and its 18 O‐substituted and thio derivatives studied by resonance Raman spectroscopy
Author(s) -
Ghomi M.,
Letellier R.,
Taillandier E.,
Chinsky L.,
Laigle A.,
Turpin P. Y.
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.1250170304
Subject(s) - raman spectroscopy , uracil , chemistry , resonance (particle physics) , resonance raman spectroscopy , valence (chemistry) , spectral line , thio , nuclear magnetic resonance , spectroscopy , ultraviolet , analytical chemistry (journal) , atomic physics , computational chemistry , molecular physics , stereochemistry , physics , optics , organic chemistry , dna , biochemistry , quantum mechanics , astronomy
On the basis of a valence force field, the frequencies of the vibrational modes of uracil and its 18 O derivatives substituted in the 2‐, the 4‐ and the 2, 4‐positions, have been calculated. The frequencies are compared with those available from the ultraviolet resonance Raman spectra. The resonance Raman bands observed experimentally in the spectra of the uracil 2‐, 4‐ and 2, 4‐dithio derivatives have been calculated with an equivalent extended force field, and a tentative assignment of these lines is proposed.