Abstract
The acidity of a number of nitro derivatives of 1,2,4-triazole has been determined. The acidity indices correlate well with Hammett's σI and σmeta constants and somewhat less well with the σpara constants. The high values of ρ show the great sensitivity of the system to the influence of substituents. The acidities of the conjugate acids of 3-nitro-1,2,4-triazole and its C- and N-methyl derivatives have also been determined. Hammett's postulate is not observed for these compounds, and the amide scale of acidity, HA, is more suitable for calculating their acidity indices than HO.
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For part III, see [1].
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Bagal, L.I., Pevzner, M.S. Heterocyclic nitro compounds. Chem Heterocycl Compd 6, 517–521 (1970). https://doi.org/10.1007/BF00478408
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DOI: https://doi.org/10.1007/BF00478408