Dimethyl-ammonium 5-carb-oxy-2-(1-oxo-1λ(5)-pyridin-2-yl)-1H-imidazole-4-car-box-yl-ate.
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.
Zhongshan Polytechnic, Zhongshan, Guangdong 528404,  People's Republic of China.
Chuntao
C
Dai
Jianhua
J
Nie
Yuehua
Y
Lin
Jun
J
Wang