Received 27 April 2010
In the centrosymmetric dinuclear molecule of the title compound, [Cd2(C14H8O4)2(C10H8N2)2(H2O)2], the Cd2+ ion is coordinated by three O atoms from two different diphenyldicarboxylate (dpa) ligands (one O,O'-bidentate and one monodentate), a chelating bipyridine ligand and a water molecule, generating an extremely distorted trigonal-prismatic (or irregular) CdN2O4 coordination geometry for the metal ion. The bridging ligands generate an 18-membered ring, which is stabilized by two pairs of intramolecular O-HO hydrogen bonds.
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2001); 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: HB5426 ).
The authors acknowledge financial support from the program for talent introduction in Guangdong Higher Education Institutions (grant No. 201191) and the scientific research start-up funds of talent introduction in Maoming University (grant No. 208058).
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