EFFECT OF HYDROGEN BONDING ON THE STRUCTURE AND VIBRATIONAL SPECTRA OF THE COMPLEMENTARY PAIRS OF NUCLEIC ACID BASES. II. ADENINE-THYMINE
G. N. Ten, V. V. Nechaev, A. N. Pankratov, V. I. Berezin, V. I. Baranov
Keywords: adenine, thymine, complementary pair, vibrational spectra, hydrogen bonding, interpretation
Pages: 889-895
Abstract
The vibrational spectra of an isolated complementary adenine-thymine pair are calculated in the B3LYP/6-311++G(d,p) approximation and analyzed. The effect of hydrogen bonds on the structure is shown along with the position of frequencies and intensities of normal vibrations of the pair in comparison with the spectra of isolated thymine and adenine molecules. A comparative analysis of the hydrogen bonding effect on the IR and Raman spectra of thymine and adenine is performed.
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