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3-(4-Carb­oxy-5-carboxyl­ato-1H-imidazol-2-yl)pyridin-1-ium monohydrate

By Guang-Jun Liu, Guang-Wang Zhao, Li Li and Hong-Tao Gao


In the zwitterionic mol­ecule of the title compound, C10H7N3O4·H2O, one carboxyl group is deprotonated and the pyridine N atom is protonated. The pyridinium and imidazole rings form a dihedral angle of 5.23 (1)°. An intramolecular O—H⋯O hydrogen bond occurs. In the crystal, inter­molecular N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds link the zwitterions and water mol­ecules into sheets parallel to (102)

Topics: Organic Papers
Publisher: International Union of Crystallography
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Provided by: PubMed Central

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  3. (2005). Portion of the crystal packing showing the sheet of hydrogen-bonded (dashed lines) molecules.supplementary materials sup-2 3-(4-Carboxy-5-carboxylato-1H-imidazol-2-yl)pyridin-1-ium monohydrate Crystal data