Synthesis and structural characterization of two copper complexes with long rigid ligands

Two copper complexes with long rigid ligands, Cu(Tta) 2 (L 1 ) ( I ), and Cu(Tta) 2 (L 2 ) ( II ), where L 1 = ( E )-3-(4-(1 H -benzo[d]imidazol-1-yl)-(4-phenyl)phenyl)-1-phenylprop-2-en-1-one, L 2 = ( E )-3-(4-(1 H -imidazol-1-yl)phenyl)-1-(4-phenyl)phenyl)prop-2-en-1-one), have been synthesized and characterized. The single-crystal X-ray analysis (CIF files CCDC nos. 1409671 ( I ) and 1409672 ( II )) for complexes I and II demonstrates that each copper ion assumes a distorted square-pyramidal MO 4 N polyhedron in which four oxygen atoms come from the Tta ligands, and one nitrogen atom comes from the N-donor ligand. Both of the complexes are linked into 3D networks through weak intermolecular interactions.