Poly[[μ-aqua-diaqua-bis-(μ-furan-2,5-dicarboxyl-ato-κ(2) O (2):O (5))bis-(1,10-phenanthroline-κ(2) N,N')dicopper(II)] N,N-dimethyl-formamide monosolvate].

The asymmetric unit of the title compound, {[Cu2(C6H2O5)2(C12H8N2)2(H2O)3]·C3H7NO} n , contains two Cu(II) atoms, two furan-2,5-dicarboxyl-ate (L) ligands, two 1,10-phenanthroline (phen) ligands, three coordinating water mol-ecules and one N,N-dimethyl-formamide solvent mol-ecule. Each Cu(II) atom is coordinated by two N atoms from one phen ligand, two O atoms from two L ligands and two water mol-ecules in a distorted octa-hedral geometry. The main difference between the environments of the two independent Cu atoms is in the Cu-Owater distances, which are 2.415 (2) and 2.639 (2) Å for one Cu(II) atom and 2.3560 (19) and 2.911 (4) Å for the other. Ligands L and one independent water mol-ecule bridge the Cu(II) atoms, forming corrugated polymeric layers parallel to the ab plane. Inter-molecular O-H⋯O and C-H⋯O hydrogen bonds consolidate the crystal packing.