Aqua-(9,10-dioxoanthracene-1,5-disul-fonato-κO)bis-(1,10-phenanthroline-κN,N')nickel(II).

In the mononuclear title complex, [Ni(C(14)H(6)O(8)S(2))(C(12)H(8)N(2))(2)(H(2)O)], the Ni(II) atom is in a distorted octa-hedral coordination formed by four N atoms from two chelating 1,10-phenanthroline ligands and by two O atoms, one from a 9,10-dioxoanthracene-1,5-disulfonate ligand and the other from a water mol-ecule. An intra-molecular O-H⋯O hydrogen bond occurs. In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mononuclear complexes into chains extending parallel to [010]. Furthermore, π-π stacking inter-actions [centroid-centroid distance = 3.5696†(6)†à ] stabilize the crystal structuure.