catena-Poly[triethyl-ammonium [[tetra-μ-acetato-κ(8)O:O'-dicuprate(II)]-μ-acetato-κ(2)O:O'] tetra-hydro-furan monosolvate].

In the title compound, {[(C(2)H(5))(3)NH][Cu(2)(CH(3)COO)(5)]·C(4)H(8)O}(n), the two different Cu(II) atoms are coordinated in a pseudo-square-pyramidal environment by five O atoms from the acetate ligands. Neighbouring pairs of Cu(II) atoms are linked by four basally coordinating bridging acetate ligands as in the crystal structure of copper acetate monohydrate. The fifth, apically coordinating ligand links two of the dicopper tetra-acetate paddlewheel-units together, thus building a linear coordination polymer which extends along [10-1]. Each apical acetate ligand is linked by an N-H⋯O hydrogen bond to a triethyl-ammonium cation. Weak C-H⋯O hydrogen bonding interactions also occur.