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Acta Cryst. (2013). E69, m154-m155
[ doi:10.1107/S1600536813003772 ]


K.-L. Zhong

Abstract: The title compound, [Ni(SO4)(C10H8N2)(C2H6O2)(H2O)]n, contains two crystallographically unique NiII atoms, each lying on a twofold rotation axis and having a slightly distorted octahedral environment. It is isotypic with the previously reported CuII analog [Zhong et al. (2011). Acta Cryst. C67, m62-m64]. One NiII atom is coordinated by two N atoms from two bridging 4,4'-bipyridine (4,4'-bipy) ligands, two O atoms from two sulfate ions and two aqua O atoms. The second NiII atom is surrounded by two N atoms from 4,4'-bipy ligands and four O atoms, two from bridging sulfate ions and from two ethane-1,2-diol ligands. The sulfate anion acts as a bridging ligand, linking adjacent NiII atoms, leading to the formation of linear ...Ni1-Ni2-Ni1-Ni2... chains along the a-axis direction. Adjacent chains are further bridged by 4,4'-bipy ligands, resulting in a two-dimensional layered polymer parallel to (001). In the crystal, the polymeric layers are linked by extensive O-H...O hydrogen-bonding interactions involving the O atoms of the water molecules and the ethane-1,2-diol molecules, resulting in a three-dimensional supramolecular network.

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