Aqua­(2-hydr­oxy-5-sulfonatobenzoato-κO (1))bis­(2-phenyl-1H-1,3,7,8-tetra­aza­cyclo­penta­[l]phenanthrene-κ(2) N (7),N (8))zinc(II)

In the title compound, [Zn(C(7)H(4)O(6)S)(C(19)H(12)N(4))(2)(H(2)O)], the Zn(II) ion is coordinated by two N,N′-bidentate 2-phenyl-1H-1,3,7,8-tetra­azacyclo­penta­[l]phenanthrene ligands, one O-monodentate 5-sulfosalicylate dianion and a water mol­ecule. This results in a distorted cis-ZnO(2)N(4) octa­hedral coordination geometry for the metal ion. In the crystal, mol­ecules are expanded into a three-dimensional supra­molecular motif via O—H⋯O, O—H⋯N and N—H⋯(O,S) hydrogen bonds. In addition, π–π stacking inter­actions between the aromatic rings of the polycyclic ligands consolidate the sturcture [shortest centroid–centroid distance = 3.501 (2) Å].