Crystal structure of (nitrato-κO)bis(1,10′-phenanthroline-κ2N,N′)copper(II) nitrate gallic acid monosolvate monohydrate

Abstract

The title compound, [Cu(NO3)(C12H8N2)2]NO3·C7H6O5·H2O, consists of a mononuclear complex cation with the central CuII atom in a distorted trigonal–bipyramidal coordination sphere. Two N atoms of two 1,10-phenanthroline ligands occupy the axial sites, and the remaining N atoms of the two ligands, as well as one nitrate O atom the equatorial positions. One molecule each of gallic acid and water are present in the crystal as solvent molecules that do not coordinate to the CuII cation, just as the nitrate counter-anion. In the crystal, intermolecular O—H...O hydrogen bonds, as well as C—H...O interactions and π–π ring stacking between benzene and pyridine rings [centroid-to-centroid distances = 3.471 (2), 3.559 (2) and 3.790 (2) Å], link the molecules into a three-dimensional network structure.

Keywords

• crystal structure
• trigonal–bipyramidal coordination
• Cu complex
• phenanthroline ligand