Poly[[μ-1,4-bis-(pyridin-4-ylmeth-yl)piperazine]bis-[μ 3 -4-(2-carboxyl-atoeth-yl)benzoato]dicopper(II)].

In the title coordination polymer, [Cu 2 (C 9 H 6 O 4 ) 2 (C 16 H 20 N 4 )] n , the Cu II atoms in {NO 4 } square-pyramidal coordination environments are conjoined into diperiodic coordination polymer slabs by the full span of the bridging 1,4-bis-(pyridin-4-ylmeth-yl)piperazine (bpmp) and 4-(carboxyl-eth-yl)benzoate (ceb) ligands. The slab motifs are expanded into the full crystal structure by means of longer-range C-H⋯O attractive inter-actions.