ANION RADICALS OF PHENYL SUBSTITUTED NITROBENZENES

Some phenyl substituted nitrobenzenes were reduced to their anion radicals, and investigated by ESR spectroscopy. The spin density distributions of some of these radicals were calculated by the SCF-MO method. Satisfactory agreement between calculated and experimental 13C hyperfine coupling constants of the anion radical of 2,4,6-triphenylnitrobenzene is only obtained if CC-hyperconjugation is taken into account for [2-13C]-2,4,6-triphenylnitrobenzene. © 1969.