W. Bocian et al., MULTINUCLEAR MAGNETIC-RESONANCE STUDY OF SOME MESOIONIC 1,2,3-TRIAZOLES AND RELATED-COMPOUNDS, Magnetic resonance in chemistry, 34(6), 1996, pp. 453-457
H-1, C-13, N-14 and N-15 NMR results are reported for some mesoionic 1
,2,3-triazoles and related compounds. It is demonstrated that N-14 NMR
linewidths are dependent on the charge present on the nitrogen atom.
In addition, it is shown that nitrogen NMR is of great value in the de
termination of the site of protonation, the ability to distinguish rea
dily between mesoionic cyclic and non-cyclic structures and to follow
the transformation between such structures.