On the Normal Modes of Vibration in the Uracil Residue—The Use of 15N-Isotope Effects
- 1 May 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 52 (5) , 1340-1345
- https://doi.org/10.1246/bcsj.52.1340
Abstract
β-Uridine-5′-phosphoric acid-15N2 has been prepared from 15N-RNA of baker’s yeast which was grown in (15NH4)2SO4 as the sole nitrogen source. Its Raman spectrum has been observed both in 1H2O and 2H2O solutions. On the basis of the observed 15N isotope effects on the Raman spectra and on the basis of other data previously obtained, normal modes of vibration have been discussed for six Raman bands of the uracil residue that are considered to be in resonance with its electronic transition at 260 nm. The result has led to a conclusion that C5=C6 is longer and C4–C5 is shorter in the excited electronic state à (260 nm) than those in the ground electronic state \~{X}.Keywords
This publication has 5 references indexed in Scilit:
- A correlation between vibronic coupling, adiabatic potential, and Raman scattering: A theoretical background of a proposed ruleJournal of Raman Spectroscopy, 1976
- Molecular Geometry in an Excited Electronic State and a Preresonance Raman EffectScience, 1975
- Electronic spectra of nucleic acid bases. I. Interpretation of the in-plane spectra with the aid of all valence electron MO-CIA [configuration interaction] calculationsJournal of the American Chemical Society, 1973
- Infrared absorption spectra of protonated and deprotonated nucleosidesBiochimica et Biophysica Acta, 1962
- Vibrational Spectra of Phosphite and Hypophosphite Anions, and the Characteristic Frequencies of PO3-- and PO2- GroupsJournal of the American Chemical Society, 1957