Received 4 December 2011
In the title compound, [Co(C13H8N3O2)2]·2H2O, the CoII atom has a distorted octahedral environment defined by four N atoms and two O atoms from two 6-(1H-benzimidazol-2-yl)pyridine-2-carboxylate ligands. In the crystal, the complex molecules and uncoordinated water molecules are linked via N-HO and O-HO hydrogen bonds, forming a two-dimensional supramolecular structure parallel to (010). - interactions are present between the imidazole, pyridine and benzene rings [centroid-centroid distances = 3.528 (2), 3.592 (2), 3.680 (2) and 3.732 (3) Å].
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: XP in SHELXTL and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HY2495 ).
The authors thank Jilin University for supporting this work.
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