Received 18 February 2013
The asymmetric unit of the title Pb-based coordination polymer, [Pb2(C24H16N2O8)(H2O)2]n, consists of one PbII cation, half of a 4,4'-(1,4-phenylene)bis(2,6-dimethylpyridine-3,5-dicarboxylate (L4-) ligand and one coordinating water molecule. The centers of the benzene ring of the ligand and the four-membered Pb/O/Pb/O ring are located on centers of inversion. The PbII ion is coordinated in form of a distorted polyhedron by seven O atoms from four separate L4- ligands and by one water O atom. The PbO7 polyhedra share O atoms, forming infinite zigzag [PbO4(H2O)]n chains along  that are bridged by L4- ligands, forming a two-dimensional coordination network parallel to (001). O-HO hydrogen bonds involving the water molecule are observed.
For background to metal-organic frameworks, see: Long & Yaghi (2009); Zhao et al. (2003). For related structures, see: Liu et al. (2002); O'Keeffe et al. (2008); Zhang et al. (2011). For lead complexes, see: Harrowfield et al. (2004); Yang et al. (2007). For typical Pb-O distances, see: Chen et al. (2012); Wei et al. (2005). For the photoluminescent mechanism of ligand-metal charge transfer, see: Hu et al. (2010); Zhang et al. (2012).
Data collection: APEX2 (Bruker, 2010); cell refinement: SAINT-Plus (Bruker, 2008); 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: PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IM2422 ).
This work was supported by the Science and Technology Projects of Chongqing Municipal Education Commission (grant No. KJ120632) and Chongqing Normal University Scientific Research Foundation Project (grant No. 2011XLS30).
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