Received 13 October 2013
In the title complex, [Ni(C6H9N2O3S)2(H2O)2]·2H2O, the NiII atom lies on an inversion center and is chelated by N and O atoms of two symmetry-equivalent imidazolesulfonate ligands in the basal plane, and two water O atoms in axial positions in an overall octahedral configuration. The crystal structure displays O-HO and N-HO hydrogen bonds, which connect the components into an extended three-dimensional network.
For examples of Ni-sulfonate complexes and MOFs, see: Lobana et al. (2004); Forbes & Sevov (2009); Kim et al. (2004); Yang et al. (2010). A small number of structurally characterized imidazole sulfonates are known, see: Kuhn et al. (2001, 2002); Chidambaram et al. (1988). The 2-ethyl-4-methyl-5-sulfonate ligand is described by Purdy et al. (2007) and Purdy & Butcher (2011).
Data collection: CrysAlis PRO (Agilent, 2012); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: JJ2177 ).
We thank The Office of Naval Research for financial support. RJB wishes to acknowledge the NSF-MRI program (grant CHE-0619278) for funds to purchase the diffractometer.
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