μ-4,4′-Bipyridine-bis­[aqua­(4-hy­droxy­pyridine-2,6-dicarboxyl­ato)copper(II)]

The title compound, [Cu₂(C₇H₃NO₅)₂(C₁₀H₈N₂)(H₂O)₂], exhibits a centrosymmetric binuclear molecule. Each completely deprotonated 4-hy­droxy­pyridine-2,6-dicarb­oxy­lic acid mol­ecule assumes a tridentate chelating coordination mode. The square-pyramidal coordination geometry around the Cu^II ion is completed by the bridging bipyridine ligand and an apical water molecule. Adjacent complexes are connected via O—H...O and C—H...O hydrogen bonds to generate a three-dimensional supra­molecular structure.

2-Chloro-3-(4-methyl­anilino)naph­tha­lene-1,4-dione

In the title compound, C₁₇H₁₂ClNO₂, the naphtho­quinone system is essentially planar [maximum deviation = 0.078 (2) Å] and makes a dihedral angle of 52.38 (7)° with the benzene ring. The crystal structure features N—H...O inter­actions.