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Chemistry of Heterocyclic Compounds

, Volume 10, Issue 3, pp 280–284 | Cite as

π-Electronic structure of the nitrofuran system

IV. ESR spectra of anion radicals of 2-vinylene derivatives of 5-nitrofuran
  • R. A. Gavar
  • L. Kh. Baumane
  • Ya. P. Stradyn'
  • S. A. Giller
Article
  • 26 Downloads

Abstract

Anion radicals of 2-vinylene derivatives of 5-nitrofuran were obtained by electrochemical generation. The hyperfine structure (hfs) of the ESR spectra of these anion radicals indicates delocalization of the unpaired electron over their entire π-electron system. The effect of the vinylene grouping on the distribution of the unpaired electron in the anion radicals and on the distribution of the unpaired electron in the vinylene grouping itself was examined on the basis of the hfs constants. It was found that the vinylene grouping by localizing more than 10% of the density of the unpaired electron on itself reduces, by a factor of 1.4, the effect of substituents in the 2 position of 5-nitrofuran on the distribution of the spin of the unpaired electron in the nitrofuran framework.

Keywords

Organic Chemistry Vinylene Anion Radical Unpaired Electron Hyperfine Structure 
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

  • R. A. Gavar
    • 1
  • L. Kh. Baumane
    • 1
  • Ya. P. Stradyn'
    • 1
  • S. A. Giller
    • 1
  1. 1.Institute of Organic SynthesisAcademy of Sciences of the Latvian SSRRiga

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