Diacridinium hexa­chloridoplatinate(IV) dihydrate

The asymmetric unit of the title compound, (C(13)H(10)N)(2)[PtCl(6)]·2H(2)O, contains a protonated acridine cation, one half of a [PtCl(6)](2−) dianionic complex and a solvent water mol­ecule. The octa­hedral [PtCl(6)](2−) dianion is located on an inversion centre. π–π inter­actions between neighboring acridinium cations produce stacks along the a axis; the shortest distance between the centroids of the six-membered rings within the cations is 3.553 (9) Å. In the crystal, two independent inter­molecular O—H⋯Cl hydrogen bonds, both involving the same Cl atom of the anion as acceptor, give rise to chains also running along the a axis; in addition each water mol­ecule, as a hydrogen-bond acceptor, is linked to the acridinium N—H group.