cis-(Acetonitrile-κN)aqua­bis­(2,2′-bipyrimidine-κ(2) N (1),N (1′))manganese(II) cis-diaqua­bis­(2,2′-bipyrimidine-κ(2) N (1),N (1′))manganese(II) tetrakis(perchlorate) dihydrate

The asymmetric unit of the title compound, [Mn(CH(3)CN)(C(8)H(6)N(4))(2)(H(2)O)][Mn(C(8)H(6)N(4))(2)(H(2)O)(2)](ClO(4))(4)·2H(2)O, contains two distinct cationic Mn(II) complexes, four perchlorate anions and two solvent water mol­ecules. In the two complexes, both Mn(II) ions are six-coordinated in a distorted octa­hedral environment, but one Mn ion has a cis-N(5)O coordination geometry defined by four N atoms of the two chelating 2,2′-bipyrimidine (bpym) ligands, one N atom of a coordinating acetonitrile mol­ecule and one O atom of a water ligand, whereas the other Mn ion has a cis-N(4)O(2) coordination geometry defined by four N atoms of the two bpym ligands and two O atoms of water ligands. In the crystal structure, the complex mol­ecules, anions and solvent water mol­ecules are linked by inter­molecular O—H⋯O and O—H⋯N hydrogen bonds. Three of the four perchlorate anions are disordered over two sets of sites in different ratios.