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Acta Crystallogr Sect E Struct Rep Online. 2012 Aug 1;68(Pt 8):o2600. doi: 10.1107/S1600536812033557. Epub 2012 Jul 28.

Dimethyl-ammonium 5-carb-oxy-2-(1-oxo-1λ(5)-pyridin-2-yl)-1H-imidazole-4-car-box-yl-ate.

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Zhongshan Polytechnic, Zhongshan, Guangdong 528404, People's Republic of China.


In the title salt, C(2)H(8)N(+)·C(10)H(6)N(3)O(5) (-), the imidazole-carboxyl-ate anion is essentially planar [maximum deviation from the least-squares plane = 0.046 (5) Å], with a dihedral angle between the rings of 2.7 (2)°. This conformation is maintained by the presence of both intra-molecular carb-oxy-carboxyl-ate O-H⋯O and imidazole-oxide N-H⋯O hydrogen bonds. Iin the crystal, cation-carboxyl-ate N-H⋯O and cation-imidazole N-H⋯N hydrogen bonds result in chains along the b axis.

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