trans‐Bis(2,2‐diphenyl­ethyl­amine‐κN)bis­(5,5‐diphenyl­hydantoinato‐κN3)copper(II) and its chloro­form disolvate

The crystal structures of the title compounds, Cu(C₁₅H₁₁N₂O₂)₂(C₁₄H₁₅N)₂] and Cu(C₁₅H₁₁N₂O₂)₂(C₁₄H₁₅N)₂]·2CHCl₃, respectively, have been determined. The red disolvate complex affords a square‐planar CuN₄ coordination environment in which the Cu^II atom lies on a centre of symmetry. The blue solvent‐free complex affords a distorted square‐pyramidal CuN₄O coordination environment and adjacent mol­ecules form centrosymmetric dimers. A comparison of the different crystal structures focuses on the role of the solvent mol­ecules in supramolecular assemblies of the copper(II) complexes.