Solid state high resolution nmr studies of electron spin densities in charge-transfer complex-based organic ferromagnets

Electron spin density distribution in the charge-transfer complexes of a series of 2-(4-N-alkylpyridinium)-4, 4,5,5-tetramethylimidazolin-1-oxyls with TCNQF4−· was investigated by the temperature dependence of the Fermi contact shifts in the solid state high resolution 1H, 13C and 19F-NMR measurements.