Received 5 August 2008
aCEMDRX, Physics Department, University of Coimbra, P-3004-516 Coimbra, Portugal,bDepartment of Chemistry, Faculty of Science, Payame Noor University, Qom Center, Qom, Iran,cFaculty of Chemistry, Tarbiat Moallem University, 49 Mofateh Avenue, 15614 Tehran, Iran, and dDepartment of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran
Correspondence e-mail: firstname.lastname@example.org
In the title compound, (C3H7N6)2[Cu(C7H3NO5)2]·6H2O, the coordination geometry of the CuII atom can be described as distorted octahedral. The equatorial plane is defined by four O atoms from two 4-hydroxypyridine-2,6-dicarboxylate ligands. The axial positions are occupied by the N atoms of the same ligands. There is an extensive three-dimensional hydrogen-bond network reinforcing crystal cohesion.
Data collection: SMART (Bruker, 2003); cell refinement: SAINT (Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT2763 ).
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