Acta Cryst. (2013). E69, m663
[ doi:10.1107/S1600536813030675 ]
Abstract: In the title compound, [Cu(C11H10N3O)2(C8H4O5)2]·4H2O, the CuII ion, located on a crystallographic inversion center, is coordinated in a square-planar environment by two trans-O atoms belonging to two monodentate 5-hydroxyisophthalate (hip) dianions and two trans nicotinamide pyridyl N-donor atoms from monodentate protonated pendant N-(pyridin-4-yl)nicotinamide (4-pnaH) ligands. The protonated 4-pyridylamine groups engage in N-H+O- hydrogen-bond donation to unligated hip O atoms to construct supramolecular chain motifs parallel to . Water molecules of crystallization, situated between the chains, engage in O-HO hydrogen bonding to form supramolecular layers and the overall three-dimensional network structure.
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