Tetra­aqua­(22′-bipyridine-κ2 NN′)manganese(II) di-μ-aqua-bis­aqua­(22′-bipyridine-κ2 NN′)(5-sulfonatoisophthalato-κO)manganate(II) tetra­hydrate

摘要

The crystal structure of the title salt, [Mn(C10H8N2)(H2O)4][Mn2(C8H3O7S)2(C10H8N2)2(H2O)4]·4H₂O, consists of mononuclear manganese(II) cations, dinuclear manganate(II) dianions and uncoordinated water mol­ecules. The dianion is located about an inversion center; the Mn^II atom is coordinated by a 2,2′-bipyridine ligand, a sulfonatoisophthalate group, a water mol­ecule along with two bridging water mol­ecules in an octa­hedral geometry. The cation lies on a twofold rotation axis; the Mn^II atom is coordinated by four water mol­ecules and a chelating 2,2′-bipyridine ligand in a distorted octa­hedral geometry. A partially overlapped arrangement between the bipyridine ligands and the aromatic ring of the sulfoisophthalate group of adjacent anions is observed; the distance (3.357 Å) indicates π–π stacking. Hydrogen bonds, with the water mol­ecules serving as hydrogen-bond donors, lead to a three-dimensional network architecture.