Di-μ-chlorido-bis(chlorido{2,2′-[3-(1H-imidazol-4-ylmethyl)-3-azapentane-1,5-diyl]diphthalimide}copper(II))

Abstract

The centrosymmetric dinuclear CuII complex, [Cu2Cl4(C24H21N5O4)2], was synthesized by the reaction of CuCl2·2H2O with the tripodal ligand 2,2′-[3-(1H-imidazol-4-ylmethyl)-3-azapentane-1,5-diyl]diphthalimide (L). Each of the CuII ions is coordinated by two N atoms from the ligand, two bridging Cl atoms and one terminal Cl atom. The CuII coordination can be best be described as a transition state between four- and five-coordination, since one of the bridging Cl atoms has a much longer Cu—Cl bond distance [2.7069 (13) Å] than the other [2.2630 (12) Å]. In addition, the Cu...Cu distance is 3.622 (1) Å. The three-dimensional structrure is generated by N—H...O, C—H...O and C—H...Cl hydrogen bonds and π–π interactions [centroid–centroid distances = 3.658 (4) and 4.020 (4) Å].