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Abstrakty
The existence of diol and oxidized diketoforms in chloroform of -pyridoin was established using reducing-difference IR-spectral analysis for non-polarized spectra interpretation. The linear-dichroic IR-spectral analysis of the compound, studied in nematic liquid crystal solution, showed stabilization of the diolic tautomer. Detailed vibrational assignment of the corresponding modes was carried out using reduced-difference procedure for polarized spectra interpretation. The experimental results were completed and enlarged with theoretical ab initio calculations.
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Tom
Strony
467--476
Opis fizyczny
Bibliogr. 23 poz., rys.
Twórcy
autor
autor
- South-West University "Neofit Rilski", Department of Chemistry, 66 "I. Mihailov" str., 2700 Blagoevgrad, Bulgaria, chapkanov@swu.bg
Bibliografia
- 1. Guthrie J.P., in Z. Rappoport (Ed.), The Chemistry of Enols/Thermodynamics of Simple Enols, Wiley,Chichester, 1990, pp. 75-93.
- 2. Hart H., Rappoport Z. and Biali S.E., in Z. Rappoport (Ed.), The Chemistry of Enols/Isolable and Relatively, Stable Simple Enols, Wiley, Chichester, 1990, pp. 481-589.
- 3. Gilli G. and Bertolasi V., in Z. Rappoport (Ed.), The Chemistry of Enols/Structural Chemistry, Wiley,Chichester, 1990, pp. 713-764.
- 4. Kolehmainen E., Osmialowski B., Krygowski T.M., Kauppinen R., Nissinen M. and Gawinecki R., J. Chem. Soc, Perkin Trans., 2, 1259 (2000).
- 5. Gawinecki R., Osmialowski B. and Kolehmainen E., Polish J. Chem., 77, 1411 (2003).
- 6. Arnaudov M.G., Int. J. Vib. Spectr., 5 (2001), section 3.
- 7. Ivanova B.B., Arnaudov M.G. and Bontchey P.R, Spectrochim. Acta, Part A, 60, 855 (2003).
- 8. Arnaudov M.G., Ivanova B.B. and Dinkov Sh.G., Vib. Spectroscopy, 37, 145 (2005).
- 9. Ivanova B.B., Kolev T. and Bakalska R., Spectrochim. Acta, PartA, 67, 196 (2007).
- 10. Kolev T, Ivanova B.B. and Bakalska R., J. Mol. Struct., 794, 138 (2006).
- 11. Jordanoy B., Nentchovska R. and Schrader B., J. Mol. Struct., 297, 2922 (1993).
- 12. Jordanov B. and Schrader B., J. Mol. Struct., 347, 389 (1995).
- 13. Arnaudov M.G. and Dinkov Sh.G., J. Mol. Struct., 476, 235 (1999).
- 14. ArnaudoY M.G. and Dimitriev Y., Phys. Chem. Glasses, 42, 99 (2001).
- 15. Arnaudov M.G., Ivanova B.B. and Dinkov Sh.G., Central Europ. J. Chem., 2(4), 589 (2004).
- 16. Dalton, a molecular electronic structure program, Release 1.2 (2001), written by T. Helgaker, H. J.Aa. Jensen, P. Jǿrgensen, J. Olsen, K. Ruud, H. Agren, A.A. Auer, K.L. Bak, V. Bakken, O. Christiansen,S. Coriani, P. Dahle, E.K. Dalskov, T. Enevoldsen, B. Fernandez, C. Hattig, K. Hald, A. Halkier, H. Heiberg, H. Hettema, D. Jonsson, S. Kirpekar, R. Kobayashi, H. Koch, K.V. Mikkelsen, P. Norman, M.J. Packer, T.B. Pedersen, T.A. Ruden, A. Sanchez, T. Saue, S.P.A. Sauer, B. Schimmelpfennig, K.O. Sylvester-Hvid, P.R. Taylor, and O. Vahtras.
- 17. Varsanyi G., Vibrational Spectra of Benzene Derivatives, Academia Kiado, Budapest, (1969).
- 18. Buechler C.A. and Harris J.O., J. Am. Chem. Soc., 72, 5015 (1950).
- 19. Moll R.B., Poziomek E.J., and Mosher W.A., J. Org. Chem., 36, 1056 (1971).
- 20. Klingsberg E., (Ed.), Pyridine and Its Derivatives, Part 4, Interscience, NY, 1964, p. 140.
- 21. Schaefer J.P. and Bertram J.L., J. Am. Chem. Soc., 89, 4121 (1967).
- 22. Inoue H., Matsumoto M., Kiyoi S. and Yamanaka M., Bull. Chem. Soc. Jpn., 46, 3900 (1973).
- 23. Ashida T., Hirokawa S. and Okaya Y., Acta Crystallogr., 18, 122 (1965).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ5-0024-0089