Mag. Reson. Chem. 50, 193-195 (2012)

DOI: 10.1002/mrc.2866

Prototropic tautomerism of 5-aryloxy-1(2)H-tetrazoles

The structure of 5-(2,6-dimethylphenoxy)-1H- and 2H-tetrazoles together with those of 5-(2,6-diisopropyl-phenoxy)-1H and 2H-tetrazoles have been theoretically studied including absolute shieldings and energies. The conclusion of these studies is that a slow tautomerism between 1H- and 2H-tetrazoles cannot explain the experimental observations reported recently in the literature.