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The radical anion of ( E )‐azobenzene revisited
Author(s) -
Buser Urs,
Ess Caspar H.,
Gerson Fabian
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260290715
Subject(s) - chemistry , hyperfine structure , azobenzene , ion , hyperfine coupling , solvent , radical ion , photochemistry , anisotropy , spectral line , resonance (particle physics) , spectroscopy , electron paramagnetic resonance , radical , nuclear magnetic resonance , organic chemistry , atomic physics , molecule , physics , quantum mechanics , astronomy
The radical anion of ( E )‐azobenzene, generated from the neutral compound by reaction with potassium mirror in an ethereal solvent, has been fully characterized by its hyperfine data with the use of ESR, ENDOR and TRIPLE‐resonance spectroscopy. Assignments of coupling constants to protons in the individual positions are based on comparison with the spectra of the radical anions of 4,4′‐dideuterio and 2,2′‐dimethyl derivatives. Effects of 14 N hyperfine anisotropy on ESR spectra and of association with the counter ion K + are briefly discussed.