Abstract
As part of a general investigation of ion-solvent and ion-ion interactions by spectrometric methods we have monitored the changes in the electron spin resonance spectrum of the anion of para-dinitrobenzene in methanol on addition of a variety of solvents. The isotropic hyper-fine coupling to 14N in the two nitro-groups (aNAV), which is particularly sensitive to changes in solvent, is plotted against the mole-fraction of added solvent in Fig. 1. It was observed, however, that of the five components associated with 14N, those having mN = ± 1 (mN being the Z component of the nitrogen nuclear spin angular momentum), namely the second and fourth sets of lines, were often much broader than the remaining lines. Results are given in Fig. 2 and a typical spectrum is shown in Fig. 3a.
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BLANDAMER, M., GROSS, J. & SYMONS, M. Line-width Alternation in the Electron Spin Resonance Spectra of Para-dinitrobenzene Anions in Various Mixed Solvents. Nature 205, 591–592 (1965). https://doi.org/10.1038/205591a0
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DOI: https://doi.org/10.1038/205591a0
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