Bis(μ2-2-chlorobenzoato-κ2O:O′)bis[(2-chlorobenzoato-κO)(1,10-phenanthroline-κ2N:N′)copper(II)] dihydrate

Abstract

In the title compound, [Cu2(C7H4ClO2)4(C12H8N2)2]·2H2O, the two crystallographically independent dinuclear complex molecules, A and B, have different Cu...Cu separations, viz. 3.286 (1) Å in A and 3.451 (1) Å in B. Both independent molecules reside on inversion centres, so the asymmetric unit contains a half-molecule each of A and B and two water molecules. Each Cu atom has a square-pyramidal environment, being coordinated by two O atoms from two bridging 2-chlorobenzoate ligands, one O atom from a monodentate 2-chlorobenzoate ligand and two N atoms from a 1,10-phenanthroline ligand. The water molecules can also be considered as coordinating ligands, which complete the coordination geometry up to distorted octahedral with elongated Cu—O distances, viz. 3.024 (3) Å in A and 2.917 (3) Å in B. In the crystal, weak intermolecular C—H...O interactions contribute to the consolidation of the crystal packing.