Molecular Crystals and Liquid Crystals, Vol.376, 371-376, 2002
ESR study and deuteration effect on the magnetic property of hydrogen-bonded benzimidazole nitronyl nitroxide
A solution ESR spectral investigation on 2-(benzimidazol-2-yl)4,4,5,5-tetramethyl-1H-imidazoline-1-oxyl-3-oxide (= BIm-NN) and a magnetic susceptibility measurement of its -(N)H deuterated sample (BIm-NN-d(1)) were carried out. A moderate amount of spin density was observed in benzimidazole ring bearing a hydrogen-bonding site. There was no appreciable difference in the temperature dependence of magnetic susceptibility between BIm-NN and BIm-NN-d(1).