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Chemistry of Heterocyclic Compounds

, Volume 9, Issue 7, pp 888–890 | Cite as

Absorption spectra of some pyridine and pyridine N-oxide derivatives in oleum

  • K. M. Dyumaev
  • N. P. Vinogradova
  • R. E. Lokhov
  • G. S. Elinson
Article

Abstract

The absorption spectra of a number of pyridlne and pyridine N-oxide derivatives in media of different acidity functions have been investigated. The bathochromic shift of the shortwave absorption band in oleum is interpreted as a consequence of the addition of a proton to the conjugate acid. The formation of a hydrogen bond between the 3-hydroxy derivative of the heterocyclic compounds investigated and the oleum, appearing as a hypsochromic shift of the long-wave absorption band, has been detected. This phenomenon is absent in the case of the 2-methoxy derivative.

Keywords

Hydrogen Hydrogen Bond Absorption Spectrum Absorption Band Pyridine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • K. M. Dyumaev
    • 1
  • N. P. Vinogradova
    • 1
  • R. E. Lokhov
    • 1
  • G. S. Elinson
    • 1
  1. 1.Scientific-Research Institute of Organic Intermediates and DyesMoscow

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