catena-Poly[copper(II)-{μ3-4,4′-dibromo-2,2′-[butane-1,4-diylbis(nitrilomethanylylidene)]diphenolato-κ4N,O:N′,O′:O′}]

• Main Authors: Hadi Kargar, Reza Kia
• Format: Article
• Language: English
• Published: International Union of Crystallography 2011-04-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536811009949

The asymmetric unit of the title coordination polymer, [Cu(C18H16Br2N2O2)]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 CuII 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 CuII 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.