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- Title
Radical Cations and Radical Anions of Three Bridgehead Azopolycycloalkanes: A fluid-solution ESR study.
- Authors
Gescheidt, Georg; Lamprecht, Axel; Rüchardt, Christoph; Schmittel, Michael
- Abstract
The radical mono-ions of three azoalkanes in which the azo group is connected to the polycyclic alkane moieties at the bridgehead C-atoms, i.e. 1,1′-azonorbornane ( 1), 1,1′-azotwistane ( 2), and 1,1′-azobicyclo[3.2.1]octane ( 3), were studied in fluid solution by ESR spectroscopy. According to the ESR parameters and MO models, the radical cations of 1-3 should be considered as σ radicals, whereas the corresponding radical anions are π radicals. INDO calculations point to a a remarkable dependence of the 14N-coupling constants on the geometry at the N-atoms in the radical cations of aliphatic azo compounds.
- Publication
Helvetica Chimica Acta, 1992, Vol 75, Issue 1, p351
- ISSN
0018-019X
- Publication type
Article
- DOI
10.1002/hlca.19920750131