(2,9-Dimethyl-1,10-phenanthroline)(4-hydroxy­pyridine-2,6-dicarboxyl­ato)copper(II) trihydrate

In the title complex, [Cu(C(7)H(3)NO(5))(C(14)H(12)N(2))]·3H(2)O, there are two independent neutral mol­ecules of the Cu complex along with six mol­ecules of water of hydration in the asymmetric unit. The Cu(II )atoms in each complex adopt a distorted square-pyramidal coordination geometry being penta­coordinated by one N and two O atoms of 4-hydroxy­pyridine-2,6-dicarboxyl­ate anions and two N atoms of 2,9-dimethyl-1,10-phenanthroline (dmp) molecules. In the crystal structure, there are O—H⋯O and C—H⋯O hydrogen bonds and five π–π stacking inter­actions with centroid–centroid distances in the range 3.620 (1)–3.712 (1) Å. In addition, a C—H⋯π inter­action between a heterocyclic ring of dmp is observed to reinforce the crystal cohesion.