An octanuclear zinc(II) complex with 6,6′-dihydroxy-2,2′-[1,2-phenylenebis(nitrilomethylidyne)]diphenol

The asymmetric unit of the title compound, tetraaquatetrakis{μ3-6,6′-dioxido-2,2′-[1,2-phenylenebis(nitrilomethylidyne)]diphenolato}octazinc(II) dimethyl sulfoxide tetrasolvate dihydrate, [Zn8(C20H12N2O4)4(H2O)4]·4C2H6OS·2H2O, contains one quarter of a ZnII octanuclear complex with overline4 symmetry, one dimethyl sulfoxide molecule and one half of a water molecule which lies on a twofold rotation axis. The ZnII atoms of the octanuclear complex have two different five-coordinate environments, viz. ZnN2O3 and ZnO5. All eight ZnII centers adopt a distorted square-pyramidal coordination; four ZnII ions have the N2O2 tetradentate Schiff base ligand bound in a basal plane and the coordinated water molecule occupying the apical site, while the remaing four ZnII ions are bound by five O atoms from three Schiff base ligands. In the crystal structure, ZnII complex molecules, coordinated and uncoordinated water molecules and dimethyl sulfoxide molecules are linked via O—H...O and C—H...O hydrogen bonds and C—H...À interactions, forming a three-dimensional framework.

Abstract licence: CC BY

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