catena-Poly[[ bis(acetato-κO)aquacopper(II)]-μ-5-(pyridin-3-yl)pyrimidine-κ2N1:N5]

In the title compound, [Cu(CH3CO2)(2)(C9H7N3)(H2O)](n), the Cu-II ion is pentacoordinated in a square-pyramidal geometry. The N atoms of the two chelating symmetry-related 5-(pyridin-3-yl)pyrimidine ligands and the O atoms of the two monodentate acetate anions are nearly coplanar, with a mean deviation from the least-squares plane of 0.157 (2) angstrom and the Cu-II ion is displaced by 0.050 (3) angstrom from this plane towards the apical water O atom. Bridging through the bis-monodentate 5-(pyridin-3-yl)pyrimidine ligand forms a one-dimensional coordination polymer extending parallel to [010]. In the crystal, O-H center dot center dot center dot O hydrogen bonds link the molecules into a two-dimensional supramolecular structure parallel to (100). The crystal studied was an inversion twin with a 0.57 (3): 0.43 (3) domain ratio.