Bis(1,10-phenanthroline-κ²N,N′)(sulfato-κO)copper(II) ethanol monosolvate

The crystal structure of the title compound, [Cu(SO₄)(C₁₂H₈N₂)₂]·C₂H₅OH, arises from the assembly of the neutral complex [Cu(SO₄)(C₁₂H₈N₂)₂] and an ethanol solvent mol­ecule. The Cu^II ion is five-coordinate, surrounded by two pairs of N atoms from two independent N,N′-chelating 1,10-phenanthroline ligands, and one O atom of monodentate sulfate ligand, in a distorted trigonal-bipyramidal fashion. Spatial orientation of the ligands and the assembly in the solid state are stabilized by the C—H...O hydrogen-bonding inter­actions, established between the O atoms (from the sulfate ligand and the ethanol mol­ecule) and the neighbouring 1,10-phenanthroline mol­ecules. There is also an offset face-to-face π–π stacking between the 1,10-phenanthroline ligands. The ethanol solvent mol­ecule is disordered over two orientations in the ratio 0.663 (10):0.337 (10). The crystal examined was subject to racemic twinning and the refined twin fraction was 0.346 (19).