Poly[bis­(μ(4)-acetato-κ(4) O:O:O′:O′)bis­(μ(3)-acetato-κ(3) O:O:O)(μ(2)-acetato-κ(2) O:O′)(μ(2)-acetic acid-κ(2) O:O′)di-μ-aqua­copper(II)tris­odium]

In the title compound, [CuNa(3)(CH(3)CO(2))(5)(CH(3)COOH)(H(2)O)(2)](n), the Cu(II) atom lies on an inversion center and is coordinated by four O atoms from four acetate ligands, leading to a square-planar geometry. One Na(I) atom, lying on an inversion center, is coordinated by four O atoms from four acetate ligands and two bridging water mol­ecules in a distorted octa­hedral geometry. The other Na(I) atom is coordinated by five O atoms from five acetate ligands and a bridging water mol­ecule. A hy­droxy H atom lies on a twofold rotation axis and is shared by two acetate ligands. The crystal packing exhibits a polymeric layer parallel to (100), which is further stablized by intra­layer O—H⋯O hydrogen bonds. The layers are linked by inter­layer O—H⋯O hydrogen bonds.