| Summary: | In the title complex, [Cu(C7H3NO5)(C14H12N2)]·3H2O, there are two independent neutral molecules of the Cu complex along with six molecules of water of hydration in the asymmetric unit. The CuII 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.
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