The electron spin resonance spectra of paradinitrobenzene anions

Abstract

Abstract Electron spin resonance spectra of paradinitrobenzene anions in methanoldioxane mixtures exhibit a very marked line-width alternation. It is shown that such alternation, stemming from a relatively small difference between the isotropic hyperfine coupling constants of the two nitrogen atoms can account for the apparently anomalous spectra in solvents of low dielectric constant.