In the title compound, [Cu2(C8H4BrO4)4(C16H20N4)(H2O)2], slightly distorted square-planar-coordinated CuII ions are bound by one aqua ligand and two monodentate 3-bromo-5-carboxybenzoate anions, and linked into a centrosymmetric dinuclear molecule by a bridging 1,4-bis(pyridin-4-ylmethyl)piperazine (4-bpmp) ligand. In the crystal, molecules are connected into a supramolecular two-dimensional network parallel to (131) via O—H⋯O hydrogen bonds involving the aqua ligands and 3-bromo-5-carboxybenzoate carboxylate groups.
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