Di-μ-salicylato-κ4O:O′-bis[(2,2′-bipyridine-κ2N,N′)copper(II)] bis(salicylic acid)

Abstract

The title complex, [Cu2(C7H4O3)2(C10H8N2)2]·2C7H6O3, crystallizes as a centrosymmetric dimer containing two CuII atoms bridged by two phenolato O atoms from salicyl­ate ligands. Each CuII atom lies in an approximate square planar environment and is bonded to two N atoms of a 2,2′-bi­pyridine ligand, the phenolato O and the carboxyl­ato O atoms of a salicyl­ate ligand. The coordination of CuII is completed by bonding to a phenolato O atom in the axial direction, giving square pyramidal geometry. The dimer is stabilized by a strong intermolecular π–π interaction involving pairs of bi­pyridine ligands and a salicyl­ate ring. The crystal structure is stabilized by π–π interactions and hydrogen bonds.