title: 3-Ethyl-4-methyl-1H-pyrazol-2-ium-5-olate.
abstract: The title compound, C(6)H(10)N(2)O, is a zwitterionic pyrazole derivative. The crystal packing is predominantly governed by a three-center iminium-amine N(+)-H⋯O(-)⋯H-N inter-action, leading to an undulating sheet-like structure lying parallel to (100).
authors.forename: R S
authors.initials: RS
authors.lastname: Rathore
authors.forename: T
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authors.initials: RV
authors.lastname: Ragavan
authors.forename: V
authors.initials: V
authors.lastname: Vijayakumar
authors.forename: S
authors.initials: S
authors.lastname: Sarveswari
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