Research Article: Tetra-μ-benzoato-bis­[(3,5-dimethyl­pyridine)­copper(II)]

Date Published: April 01, 2012

Publisher: International Union of Crystallography

Author(s): Qian Guo, Ping Wang, Fu-Chen Liu.


In the centrosymmetric binuclear title compound, [Cu2(C7H5O2)4(C7H9N)2], the CuII atom is coordinated by four O atoms from benzoate anions and one N atom from a dimethyl­pyridine ligand. A paddle-wheel-like dimer is formed by two CuII ions and four benzoate anions with two 3,5-dimethyl­pyridine ligands at the axial position of the CuII ions. The dihedral angle between the two unique benzene rings is 84.26 (16)°. The dihedral angles between the pyridine ring and the benzene rings are 61.67 (15) and 34.27 (14)°. There is π–π stacking of inversion-related pyridine rings, with a centroid–centroid distance of 3.833 (2) Å.

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For a general review of copper(II) carboxyl­ates, see: Doedens (1976 ▶). For the crystal structures of similar complexes, see: Speier & Fulop (1989 ▶).