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  • ACID SODIUM SALT OF 1H-PYRA...
    Goncharenko, V. E.; Gudovannyy, A. O.; Lunev, A. M.; Belousov, Yu. A.; Lyssenko, K. A.

    Journal of structural chemistry, 04/2022, Volume: 63, Issue: 4
    Journal Article

    The oxidation reaction of 3,3′,5,5′-tetramethyl-1H,1′H-4,4′-bipyrazole in the HNO 3 –Fe 3+ system unexpectedly resulted in the formation of 1Н-pyrazole-3,4,5-tricarboxylic acid (H 3 PTCA) isolated as the acid sodium salt Na(H 2 O) 2 H 2 PTCA. The compound has a polymeric structure stabilized by rare seven-membered Н-bonded rings.