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In the mononuclear title complex, [Cu(C14H13N2O2)2], the CuII atom lies on an inversion centre and adopts a square-planar coordination geometry. The dihedral angle formed by the pyridine and benzene rings is 74.61 (5)°. Intramolecular C—HO hydrogen bonds are present. The crystal structure is stabilized by weak aromatic π–π stacking interactions involving neighbouring pyridine rings [centroid–centroid distance = 3.853 (2) Å].
Data collection: CrystalClear (Rigaku, 2005 ); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ); molecular graphics: SHELXTL/PC (Sheldrick, 2008 ); software used to prepare material for publication: SHELXTL/PC.
Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536809029523/rz2354sup1.cif
This work was supported by the National Natural Science Foundation of China (project Nos. 20671019, 20361004) and the Doctoral Fund of the Ministry of Education of China (project No. 20060673015).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RZ2354).