catena-Poly[[tetra-μ-formato-κ(8) O:O'-dicopper(II)]-μ-hexa-methyl-ene-tetra-mine-κ(2) N (1):N (5)]

In the title polymeric compound, [Cu2(HCO2)4(C6H12N4)] n , the Cu(II) atom is five-coordinated in a square-pyramidal geometry that is defined by four O atoms from four formate ligands and one N atom from a hexa-methyl-ene-tetra-mine ligand. The two Cu(II) atoms are separated by 2.6850 (7) Å, and together with the four formate ligands they form a paddle-wheel unit. The hexa-mine ligand uses only two of its four N atoms to link Cu2 cluster units, affording a zigzag chain running along the b-axis direction. The hexa-mine ligand lies on a mirror plane.