(μ-2,2′-Bipyrimidine-κ4N1,N1′:N3,N3′)bis[triaqua(sulfato-κO)manganese(II)]

The title complex, [Mn2(SO4)2(C8H6N4)(H2O)6], is the second monoclinic polymorph [De Munno et al. (1995). Inorg. Chem. 34, 408–411; Hong et al. (1996). Polyhedron, 15, 447–452]. The asymmetric unit contains two crystallographically independent half-molecules of the binuclear MnII complex; an inversion centre is located at the centroid of each complex. The two MnII atoms in each complex molecules are bridged by a bis-chelating 2,2′-bipyrimidine (bpym) ligand and each MnII atom is six-coordinated in a considerably distorted octahedral environment defined by two N atoms of the bridging bpym ligand and four O atoms from one sulfato anionic ligand and three water molecules. In the crystal, the complex molecules are linked by O—H...O hydrogen bonds between the water and sulfato ligands, forming a three-dimensional network.

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