Experimental and theoretical studies of the stabilities and infrared spectra of the cytosine tautomers
✍ Scribed by Józef S. Kwiatkowski; Willis B. Person; Krystyna Szczepaniak; Marian Szcześniak
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 95 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0020-7608
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The i.r. spectral studies ofcytosine and its d,-deuterated derivative isolated in Ar and Ne matrices are reported. The amino-hydroxy and the amino-ox0 tautomeric forms dominate in matrices. Separation of the i.r. spectra of the two tautomers was based on observation of spectral changes following U.V
The harmonic frequencies, IR intensities and the potential energy distributions of the vibrational modes of the keto and enol tautomers of guanine are calculated at the Hartree-Fock 6-31G\*\* level. The results are compared with the experimental spectra obtained in an argon low temperature matrix. E