Tetraaqua(2,2′-bipyridine-κ2N,N′)manganese(II) di-μ-aqua-bis[aqua(2,2′-bipyridine-κ2N,N′)(5-sulfonatoisophthalato-κO)manganate(II)] tetrahydrate

Jing-Jing Nie,Bing-Yu Zhang,Duan-Jun Xu

doi:10.1107/s1600536808020540

Abstract

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 MnII 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 MnII 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.

Highlights

The crystal structure of the title salt, [Mn(C10H8N2)(H2O)4][Mn2(C8H3O7S)2(C10H8N2)2(H2O)4]Á4H2O, consists of mononuclear manganese(II) cations, dinuclear manganate(II) dianions and uncoordinated water molecules
The dianion is located about an inversion center; the MnII atom is coordinated by a 2,20-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 MnII atom is coordinated by four water molecules and a chelating 2,20-bipyridine ligand in a distorted octahedral geometry

Summary

Structure Reports Online

Key indicators: single-crystal X-ray study; T = 295 K; mean (C–C) = 0.005 A; R factor = 0.048; wR factor = 0.123; data-to-parameter ratio = 16.5. The crystal structure of the title salt, [Mn(C10H8N2)(H2O)4][Mn2(C8H3O7S)2(C10H8N2)2(H2O)4]Á4H2O, consists of mononuclear manganese(II) cations, dinuclear manganate(II) dianions and uncoordinated water molecules. The dianion is located about an inversion center; the MnII atom is coordinated by a 2,20-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 MnII atom is coordinated by four water molecules and a chelating 2,20-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 A ) indicates – stacking. With the water molecules serving as hydrogen-bond donors, lead to a three-dimensional network architecture

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