Special effects in nuclear magnetic resonance spectra of nitronate anions
Abstract
13 C N.m.r. spectra of nitronate anions show a marked solvent-dependent shift which correlates with electronic distribution in these anions; a deshielding effect of the nitronate grouping observed with 1H n.m.r. spectra shows the axial conformer of 2-substituted cyclo-hexanenitronate anions to be preferred.