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Acta Cryst. (2013). E69, m197
[ doi:10.1107/S1600536813006557 ]

catena-Poly[[[diaqua(tetramethylethylenediamine-[kappa]2N,N')nickel(II)]-[mu]-sulfato-[kappa]2O:O'] monohydrate]

G. Schmidt and K. Merzweiler

Abstract: The title compound, {[Ni(SO4)(C6H16N2)(H2O)2]·H2O}n, contains a NiII atom that is coordinated nearly octahedrally by a chelating tetraethylenediamine (tmeda) ligand, two water molecules in a cis arrangement and two O atoms of two sulfate anions in a trans arrangement. The sulfate anions act as [mu]2-bridging ligands leading to a chain structure of alternating NiO4N2 octahedra and SO4 tetrahedra parallel to [001]. The polymeric chains are linked by O-H...O hydrogen bonds between coordinating water molecules and sulfate anions to give double strands. There is a lattice water molecule which is also involved in O-H...O hydrogen bonding between adjacent [Ni(SO4)(tmeda)(H2O)2] chains.

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