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) Å and the Cu^II ion is displaced by 0.050 (3) Å 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...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.