Bis(μ-8-hydroxy-7-iodoquinoline-5-sulfonato-κ3 N,O:O′)bis[triaquazinc(II)]tetrahydrate

In the title compound, [Zn-2 (C9H4INO4S)(2) (H2O)(6)].4H(2)O, the coordination geometry around the Zn-II atom is a distorted octahedron, formed by three water molecules, the N and deprotonated O atoms of the quinolinol ring and one of the O atoms of the sulfonate group. In the centrosymmetric binuclear complex, there is a pi-pi-stacking interaction between the quinolinol rings. The water molecules of crystallization play an important role in the hydrogen-bonding patterns of the three-dimensional network.