Hexa-μ-chlorido-μ(4)-oxido-tetra­kis­({1-[(pyridin-2-yl)meth­yl]-1H-benzimidazole-κN (3)}copper(II))

The title tetra­nuclear complex, [Cu(4)Cl(6)O(C(13)H(11)N(3))(4)], features a tetra­hedral arrangement of copper(II) ions bonded to the central O atom (site symmetry [Image: see text]). Each of the six edges of the Cu(4) tetra­hedron is bridged by a chloride ion (one of which has site symmetry 2), so that each copper ion is linked to the other three metal ions through the central O atom and through three separate chloride-ion bridges. The fifth coord­ination position, located on the central Cu—O axis on the outside of the cluster, is occupied by an N atom of the mono­dentate 1-(pyridin-2-ylmeth­yl)-1H-benzimidazole ligand. The resulting coordination geometry of the metal ion is a distorted trigonal bipyramid with the O and N atoms in the axial positions. The dihedral angle between the benzimidazole ring system and the pendant pyridine ring is 61.0 (2)°.