Received 8 July 2011
In the title compound, [Co(C10H6N3O4)2(H2O)2], the CoII ion is coordinated by two O atoms of two water molecules, two imidazole nitrogen atoms and two carboxylate O atoms of the two trans-standing chelate ligands, displaying a distorted octahedral coordination geometry. A three-dimensional supramolecular framework is generated through N-HO, O-HN and O-HO hydrogen-bonding interactions.
For the chemistry of N-heterocyclic carboxylic acids, see: Peng et al. (2010); Liu et al. (2005). For the applications of 2-(pyridine-4-yl)-1H-4,5-imidazoledicarboxylic acid, see: Li, Liu et al. (2009); Sun et al. (2006); Li, Wu et al. (2009); Chen et al. (2010).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT5574 ).
The authors acknowledge South China Normal University and the National Natural Science Foundation of China (grant No. 20871048) for supporting this work.
Bruker (2004). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Chen, L. Z., Huang, Y., Xiong, R. & Hu, H. J. (2010). J. Mol. Struct. 963, 16-21.
Li, X., Liu, W., Wu, B.-L. & Zhang, H.-Y. (2009). Acta Cryst. E65, m820-m821.
Li, X., Wu, B., Niu, C., Niu, Y. & Zhang, H. (2009). Cryst. Growth Des. 9, 3423-3431.
Liu, Z., Chen, Y., Liu, P., Wang, J. & Huang, M. H. (2005). J. Solid State Chem. 178, 2306-2312.
Peng, G., Qiu, Y. C., Liu, Z. H., Liu, B. & Deng, H. (2010). Cryst. Growth Des. 10, 114-121.
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Sun, T., Ma, J.-P., Huang, R.-Q. & Dong, Y.-B. (2006). Acta Cryst. E62, o2751-o2752.