Fermi contact nuclear magnetic resonance shifts in glyme complexes of the coronene radical anion-pair

Abstract
1 H n.m.r. spectra of glyme molecules complexed to sodium coronene radical ion-pairs show downfield shifts of 6 to 10 p.p.m. due to a Fermi contact interaction between the glyme protons and the unpaired electron, and the observed detail in the n.m.r. pattern suggests a rather well-defined structure of the ion-pair complex in solution.

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