Bis(acetato-κO)bis(μ3-quinolin-8-olato- κ4 N,O:O:O)tetra-kis(μ2-quinolin-8-olato- κ3 N,O:O)tetra-zinc(II) dihydrate

Abstract

In the centrosymmetric title compound, [Zn4(C9H 6NO)6(C2H3O2) 2]·2H2O, the ZnII atom that is bonded to one O atom of the acetate group is chelated by a quinolin-8-olate anion. This Zn atom is also bonded to the oxide O atoms of two other quinolin-8-olate anions, which themselves engage in chelation to the other ZnII atoms. The ZnII atom is five-coordinate in a square-pyramidal coordination geometry. The second ZnII atom is six-coordinate as it is linked to two oxide O atoms of the anions that chelate to the acetate-bound metal atom, and is chelated by two quinolin-8-olate ligands. The uncoordinated water mol-ecule is disordered over two positions in a 4:1 ratio. O - H⋯O hydrogen bonds between the water molecules and the free O atoms of the carboxylate groups consolidate the crystal packing.