Received 2 December 2012
In the title compound, [Cd(NO3)2(C8H7N3)2(H2O)2], the CdII cation is situated on an inversion center and is coordinated by the O atoms of two nitrate anions, by the N atoms of two 4-(imidazol-2-yl)pyridine ligands and by two water O atoms in a slightly distorted N2O4 octahedral geometry. The dihedral angle between the imidazole and pyridine rings is 1.6 (2)°. In the crystal, molecules are linked by N-HO, O-HN and O-HO hydrogen bonds, forming a three-dimensional network.
For background to compounds with metal-organic framework (MOF) structures, see: Batten & Robson (1998); Burrows (2011); Jin et al. (2010); Tanabe & Cohen (2011). For the use of N,N'-type ligands in MOFs, see: Custelcean (2010); Pschirer et al. (2002). For the structural analysis of an imidazole closely related to the ligand, see: Voss et al. (2008).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2004); data reduction: SAINT-Plus; 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: IM2415 ).
We gratefully acknowledge financial support by the National Natural Science Foundation of China (21171053) and the Science Foundation of Hubei Provincial Department of Education (Z20102501).
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