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Figure 1
The mol­ecular structures of the constituents of (I)[link], showing displacement ellipsoids at the 70% probability level. The pyrazolyl-N4, N8—H⋯O2, O1(carbon­yl), pyrazolium-N7—H⋯N3(pyrazol­yl) and water-O—H⋯N6(pyrazolium) hydrogen bonds are shown as dashed lines. Note the non-symmetric nine-membered {⋯HNNH⋯NC3O} and {⋯HNN⋯HNC3O} synthons formed between the neutral and tautomeric mol­ecules.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 75| Part 5| May 2019| Pages 565-570
https://doi.org/10.1107/S2056989019004389
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