A comparative investigation of supramolecular structures involving copper(II) complexes of imidazolinylalkanimidamides

The syntheses of three new copper(II) complexes based on the bidentate ligand N-(4-oxo-5,5-diphenyl-4,5-dihydro-1H-imidazol-2-yl) ethanimidamide are reported. In the solid state these products assemble into elaborate supramolecular structures featuring hydrogen bonds within, and between, complexes as well as weak aryl-aryl and alkyl-aryl interactions between complexes; different coordination geometries and tautomeric forms are also observed. Dimethyl sulfoxide molecules show a variety of interactions within the structures, including coordination to the copper, hydrogen bonding, as well as weak alkyl-aryl interactions with the ligands.