metal-organic compounds
Open access
The title compound, [Cu3(C7H3NO4)4(C2H8N2)2]·C2H8N2·4H2O, 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—HO and C—HO hydrogen bonds and C—Oπ stacking of the pyridine and carboxylate groups [Ocentroid distances = 3.669 (2) and 3.668 (2) Å] are observed in the crystal structure.
metal-organic compounds
Open access
The asymmetric unit of the title complex, (C6H8N)2[Cu(C7H3NO4)2]·6H2O, contains half a copper(II)–dipicolinate complex located on a twofold rotation axis, one protonated aniline molecule and three solvent water molecules. The CuII atom is coordinated by four O atoms and two N atoms from two dipicolinate ligands in a distorted octahedral environment. In the crystal, the components are linked into a three-dimensional framework by intermolecular O—HO and N—HO interactions.