Received 10 November 2008
aDepartment of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China,bDepartment of Chemistry, Dezhou University, Dezhou 253023, People's Republic of China, and cInstitute of Crystalline Materials, Shandong University, Jinan 250100, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the centrosymmetric dinuclear complex, [Cu2(C8H4O5)2(C10H8N2)2(H2O)2], the CuII ion is coordinated by two N atoms from a bipyridine ligand, three O atoms from two 3-carboxy-2-oxidobenzoate dianions and the O atom of the water molecule in a distorted octahedral geometry. The Cu--O(H) coordination [2.931 (3) Å] is very weak. In the crystal structure, the dinuclear units are linked into a two-dimensional network parallel to (010) by O-HO hydrogen bonds.
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI2713 ).
We thank Professor Dao-Feng Sun and Dr Xi-Feng Lu for the data collection and helpful discussions. This work was supported by the National Natural Science Foundation of China (grant Nos. 50672048 and 50721002).
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