cis-Aqua­dichlorido[pyrimidin-2(1H)-one-κN (3)]copper(II)

In the title compound, [CuCl(2)(C(4)H(4)N(2)O)(H(2)O)], the Cu(II) cation is coordinated by two chloride anions, one pyrimidin-2-one N atom and one water mol­ecule, giving a slightly distorted square-planar geometry. In the crystal structure, the pyrimidin-2-one rings stack along the b axis, with an inter­planar distance of 3.306 Å, as do the copper coordination planes (inter­planar spacing = 2.998 Å). The coordination around the Jahn–Teller-distorted Cu(II) ion is completed by long Cu⋯O [3.014 (5) Å] and Cu⋯Cl [3.0194 (15) Å] inter­actions with adjacent mol­ecules involved in this stacking. Several N—H⋯Cl, O—H⋯Cl and O—H⋯O inter­molecular hydrogen bonds form a polar three-dimensional network.