Aqua(2,2′-bipyridine-κ2N,N′)(3,5-dinitrobenzoato-κO1)copper(II) tetrahydrofuran monosolvate

Abstract

The title complex, [Cu(C7H3N2O6)2(C10H8N2)(H2O)]·C4H8O, features a pentacoordinate CuII atom bound by two monodentate carboxylate ligands, a bidentate 2,2′-bipyridine molecule [dihedral angle between pyridine rings = 5.0 (2)°] and a water molecule. The resulting N2O3 donor set defines a distorted square-pyramidal geometry with the coordinated water molecule in the apical position. In the crystal, the presence of O—Hw...Oc (w = water and c = carbonyl) hydrogen bonding leads to the formation of a supramolecular chain propagating along the c axis, which associates into a double chain via C—H... O and π–π contacts between pyridyl rings [centroid–centroid distance = 3.527 (3) Å]. The solvent molecules, which are disordered over two orientations in a 0.678 (11):0.322 (11) ratio, occupy voids defined by the complex molecules and are held in place via C—H...O interactions.