Substituent Effect on Electron Affinity of 2,6-Dimethylnitrobenzene.

Electron affinities have been determined for a series of 2,6-dimethyl-4-substituted nitrobenzenes, where the nitro group is twisted out of the coplanarity with the benzene ring, by measurement of electron transfer equilibria in the gas phase with a pulsed ICR spectrometer. The substituent effect of this system has been found to be in agreement with that of the planar nitrobenzene system.