Aqua-{μ-1,4-bis-[(1,4,7,10-tetra-aza-cyclo-dodecan-1-yl)meth-yl]benzene}(nitrato-κ)dicopper(II) tris-(nitrate) trihydrate.

Abstract

The crystal structure of a dinuclear copper(II) complex incorporating a bis-cyclen benzyl-bridging ligand has been determined. Both copper centers adopt square-pyramidal coordination geometries; however, the axial positions differ between the two metal sites, one occupied by a water molecule and the other by a nitrate ion. An extensive intermolecular hydrogen-bond network is formed through interactions among nitrate ions, coordinated and lattice water molecules, and N–H groups of the macrocyclic ligand. This structural characterization provides insight into the coordination chemistry of cyclen-based dinuclear copper assemblies.