catena-Poly[copper(II)-{μ(3)-4,4′-dibromo-2,2′-[butane-1,4-diylbis(nitrilo­methanyl­yl­idene)]diphenolato-κ(4) N,O:N′,O′:O′}]

The asymmetric unit of the title coordination polymer, [Cu(C(18)H(16)Br(2)N(2)O(2))](n), consists of a Schiff base complex in which a crystallographic twofold rotation axis bis­ects the central C—C bonds of the n-butyl spacers of the designated Schiff base ligands, making symmetry-related dimer units, which are twisted around Cu(II) atoms in a bis-bidentate coordination mode. In the crystal, these dimeric units are connected through Cu—O bonds, forming one-dimensional coordination polymers, which propagate along [001]. The Cu(II) atom adopts a square-based pyramidal coordination geometry, being coordinated by two N and two O atoms of symmetry-related ligands and by a third O atom of a neighboring complex. Furthermore, inter­molecular π–π inter­actions [centroid–centroid distance = 3.786 (2) Å] and C—H⋯O inter­actions stabilize the crystal packing.