catena-Poly[triethyl­ammonium [[tetra-μ-acetato-κ⁸O:O′-dicuprate(II)]-μ-acetato-κ²O:O′] tetra­hydro­furan monosolvate]

In the title compound, {[(C₂H₅)₃NH][Cu₂(CH₃COO)₅]·C₄H₈O}_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 tetra­acetate 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 triethyl­ammonium cation. Weak C—H...O hydrogen bonding interactions also occur.