[(Pyridine-2,6-dicarboxylato)copper(II)]-μ-(pyridine-2,6-dicarboxylato) -[bis-(ethylenediamine)copper(II)]-μ-(pyridine-2,6-dicarboxylato) -[(pyridine-2,6-dicarboxylato)copper(II)] ethylenediamine monosolvate tetrahydrate

Abstract

The title compound, [Cu3(C7H3NO 4)4(C2H8N2) 2]·C2H8N2·4H 2O, was obtained by the reaction of copper(II) acetate dihydrate with pyridine-2,6-dicarboxylic acid (H2dipic) and ethylenediamine (en) in an aqueous solution. All of the CuII atoms in the trinuclear centrosymmetric title complex are six-coordinated in a distorted octahedral geometry with N2O4 and N4O2 environments for the outer and central CuII atoms, respectively. Various interactions, including numerous O - H⋯O and C - H⋯O hydrogen bonds and C - O⋯π stacking of the pyridine and carboxylate groups [O⋯centroid distances = 3.669 (2) and 3.668 (2) Å] are observed in the crystal structure.