Bis(9-amino­acridinium) bis­(pyridine-2,6-dicarboxyl­ato-κ(3) O (2),N,O (6))manganate(II) trihydrate

The asymmetric unit of the title compound, (C(13)H(11)N(2))(2)[Mn(C(7)H(3)NO(4))(2)]·3H(2)O, consists of a discrete mononuclear [Mn(2,6-pydc)(2)](2−) anionic complex (2,6-pydc is pyridine-2,6-dicarboxyl­ate) associated with two 9-amino­acridinium counter-ions for neutralization of charge and three uncoordin­ated water mol­ecules. The Mn(II) atom is six-coordinated by (2,6-pydc)(2−) anions in a tridentate fashion and is at the centre of a distorted octa­hedron formed by the MnO(4)N(2) bonding set. In the crystal, various inter­molecular inter­actions between different moieties can be found, such as different kinds of hydrogen bonds, offset or slipped π–π [centroid–centroid distances in the range 3.3704 (12) to 3.8674 (13)Å] and C=O⋯π [3.563 Å] inter­actions, which lead to the formation of a three-dimensional supra­molecular network.