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Stable pyridinyl radicals

  • Edward M. Kosower
Conference paper
Part of the Topics in Current Chemistry book series (TOPCURRCHEM, volume 112)

Abstract

Pyridinyls are pi-radicals (formally, pyridinium ion + e) which are highly reactive, some being stable enough to be isolated. Spectroscopy and magnetic resonance reveal a variety of radical species: monomeric radicals, singlet complexes (pi-mers), triplet pairs, and dimers which are thermally and photo-dissociable (see Fig. 27). A new thin film spectroscopic apparatus for the study of air-sensitive species is described. EPR spectra provide details of the electron distribution within pyridinyl radicals. Reactive pyridinyls, non-volatile pyridinyls and pyridinyl cation radicals can be prepared. Pyridinyl radical dimers photodissociate via a πσ → πσ* electronic transition. Pyridinyl radicals and halocarbons react via a) solvent insensitive atom transfer or b) solvent sensitive electron transfer processes.

Keywords

Light Emit Diode Cation Radical Pulse Radiolysis Sapphire Window Pyridinium Bromide 
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

© Springer-Verlag 1983

Authors and Affiliations

  • Edward M. Kosower
    • 1
    • 2
  1. 1.Chemistry DepartmentsTel-Aviv UniversityRamat-Aviv, Tel-AvivIsrael
  2. 2.State University of New YorkStony BrookUSA

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