Research Article: Poly[[μ2-aqua-μ3-(4-carb­oxy-2-propyl-1H-imidazole-5-carboxyl­ato-κ4N3,O4:O4:O5)-sodium] hemihydrate]

Date Published: April 01, 2011

Publisher: International Union of Crystallography

Author(s): Zhong-Jing Huang, Jin-Niu Tang, Zhi-Rong Luo, Dai-Yin Wang, Huan Wei.


In the title compound, {[Na(C8H9N2O4)(H2O)]·0.5H2O}n, the Na+ ion is coordinated by two bridging water mol­ecules, one N atom and three O atoms from three 4-carb­oxy-2-propyl-1H-imidazole-5-carboxyl­ate (H2pimdc) ligands. Adjacent Na+ ions are linked alternately by two water O atoms and two carb­oxy O atoms into a chain along [001]. These chains are connected through the coordination of the carboxyl­ate O atoms to the Na+ ions, forming a three-dimensional structure. An intra­molecular O—H⋯O hydrogen bond and inter­molecular N—H⋯O and O—H⋯O hydrogen bonds are present in the crystal structure.

Partial Text

For the properties and biological activity of imidazole-4,5-dicarb­oxy­lic acid and its derivatives, see: Baures (1999 ▶); Bogdanova et al. (1992 ▶); Borodkin et al. (1984 ▶); Reichardt et al. (1992 ▶); Su et al. (2001 ▶).




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