K. Awaga et al., CRYSTAL-STRUCTURE AND ELECTRONIC-STATE OF THE ORGANIC FERROMAGNET, NITROPHENYL ALPHA-NITRONYL NITROXIDE RADICAL, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 232, 1993, pp. 79-88
Three kinds of alpha-nitronyl nitroxides, including the organic ferrom
agnet, p-nitrophenyl alpha-nitronyl nitroxide, have been structurally
characterized. MO calculation has indicated that both of the spin and
electronic polarization effects are much enhanced in this radical fami
ly, and that the spin density distribution depends little on the subst
ituent at the alpha position. The magneto-structural correlation is di
scussed, based on the difference in the crystal structure.