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Spectroscopic structure investigations on heterocyclic compounds

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Acta Physica Academiae Scientiarum Hungaricae

Abstract

Several structure-spectrum correlations has been established on nitrogen containing six membered aromatic heterocyclic compounds. 1. Some characteristic differences between vibrational skeletal frequencies were correlated with the product of two internal coordinates. 2. The normal coordinate analysis of pyridine and pyrazine N-oxides was elaborated based on the isoelectronicity with the corresponding fluorobenzenes. 3. The normal coordinate analysis of more complex heterocyclic molecules was attributed to the simpler case of substituted benzenes. 4. The ultraviolet spectra of some condensed heterocyclic compounds were interpreted and the spectrum influencing effect of the substituents was established. 5. Protolytic equilibria were investigated in basic and acidic media for some pyrazine and pyrimidine derivatives. The influence of the substituents on the basicity of the nitrogens was interpreted.

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Authors and Affiliations

  1. Department of Physical Chemistry, Technical University, Budapest

    G. Varsányi, F. Billes, A. Grofcsik, Á Kiss & L. Sztraka

  2. Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest

    E. Baitz, G. Horváth, G. Keresztury & S. Szőke

  3. Chemical and Pharmaceutical Works Chinoin, Budapest

    G. Jalsovszky & A. Tóth

Authors
  1. G. Varsányi
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  2. E. Baitz
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  3. F. Billes
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  4. A. Grofcsik
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  5. G. Horváth
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  6. G. Jalsovszky
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  7. G. Keresztury
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  8. Á Kiss
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  9. S. Szőke
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  10. L. Sztraka
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  11. A. Tóth
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Varsányi, G., Baitz, E., Billes, F. et al. Spectroscopic structure investigations on heterocyclic compounds. Acta Physica 35, 219–238 (1974). https://doi.org/10.1007/BF03159759

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  • DOI: https://doi.org/10.1007/BF03159759

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