Substituenteneffekte in der Elektronenspinresonanz 4.4′-disubstituierter Diarylstickoxide

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Abstract
Bis- (4-R-aryl) -nitroxides show an excellent correlation between nitrogen hyperfine coupling constants and Hammett’ s σ-values. This can be explained through the effect of symmetric substitution and a vanishingly small dependence of aN on the oxygen spin density

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