Intermolecular Interactions in the Crystal of a New Nickel(II)-cobalt(II)- nickel(II) Trinuclear Complex Containing a Macrocyclic Complex Ligand

Abstract

A new trinuclear complex [Co(NiL)2(H2O)2](ClO4)2 was synthesized by using a macrocyclic complex ligand [NiL], where L is the dianion of diethyl-5,6,7,8,16,17-hexahydro-6,7-dioxo-16Hdibenzo[ e,n] [1,4,8,12]tetraazacyclopentadecine-13,19-dicarboxylate. X-ray analysis revealed that the two Ni(II) ions have the same distorted N4 square planar coordination geometries. The Co(II) ion resides in a distorted octahedral O6 coordination environment. In the crystal, π···π interaction between a phenyl ring and three non-aromatic π-systems involving Ni and N atoms was observed together with C-H···O and O-H···O hydrogen bonds. These non-covalent interactions link the dications and the perchlorate anions to form a 3D supramolecular network.