catena-Poly[[[dibromidomanganese(II)]-μ-2,2′-bipyrimidine-κ4N1,N1′:N3,N3′]dihydrate]

The asymmetric unit of the title compound, {[MnBr2-(C8H6N4)]center dot 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-N4Br2 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 center dot center dot center dot Br and C-H center dot center dot center dot O hydrogen bonds, forming a two-dimensional layered structure extending parallel to the ac plane.