catena-Poly[[[dibromidomanganese(II)]-μ-2,2′-bipyrimidine-κ(4) N (1),N (1′):N (3),N (3′)]dihydrate]

The asymmetric unit of the title compound, {[MnBr(2)(C(8)H(6)N(4))]·2H(2)O}(n), contains one half of a repeat unit of the neutral linear coordination polymer and a solvent water mol­ecule, with the Mn(II) ion on a crystallographic twofold axis. In the polymer, inversion-related Mn(II) ions are bridged by the bis-chelating 2,2′-bipyrimidine (bpym) ligands, thereby forming a chain structure along the c-axis direction, and are six-coordinated in a distorted cis-N(4)Br(2) octa­hedral environment by four N atoms of twofold-related bpym ligands and twofold-related bromide anions. In the crystal, the complex polymers and solvent water mol­ecules are linked by inter­molecular O—H⋯Br and C—H⋯O hydrogen bonds, forming a two-dimensional layered structure extending parallel to the ac plane.