Penta-aqua-(acetonitrile-κN)zinc(II) 4,6-dihydroxy-benzene-1,3-disulfonate trihydrate.

In the title compound, [Zn(CH(3)CN)(H(2)O)(5)](C(6)H(4)O(8)S(2))·3H(2)O, the Zn(II) ion lies on a mirror plane and is octa-hedrally coordinated by one acetonitrile ligand and five water mol-ecules. The 4,6-dihydroxy-benzene-1,3-disulfonate anion, acting as a counter-ion, is also located on the mirror plane. The crystal packing is stabilized by O-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network.