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Chemistry of Heterocyclic Compounds

, Volume 1, Issue 1, pp 72–75 | Cite as

Electron density distribution in heterocyclic systems with two vicinal nitrogen atoms. III. Dipole moments of some alkyl, aryl, and nitro pyrazole derivatives

  • S. A. Giller
  • I. B. Mazheika
  • I. I. Grandberg
Article

Abstract

Dipole moments of 13 alkyl and aryl derivatives of pyrazole are determined. It is found that fundamentally it is the pyrazole ring that determines the values of these dipole moments. The phenyl group behaves as a weak electron donor with respect to the pyrazole ring. It is shown that under the action of powerful electron-accepting substituents, such as the nitro group, the electron cloud of the pyrazole ring is polarized toward the electron acceptor.

Keywords

Nitrogen Phenyl Dipole Moment Nitrogen Atom Density Distribution 
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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References

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Copyright information

© The Faraday Press, Inc. 1965

Authors and Affiliations

  • S. A. Giller
    • 1
    • 2
  • I. B. Mazheika
    • 1
    • 2
  • I. I. Grandberg
    • 1
    • 2
  1. 1.Institute of Organic Synthesis AS Latvian SSRRiga
  2. 2.Lomonosov Moscow State UniversityUSSR

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