Received 11 October 2012
In the title compound, [Ni(C8H6ClO3)2(H2O)4], the NiII ion is located on a crystallographic inversion centre and is octahedrally coordinated by two 2-(4-chlorophenoxy)acetate ligands in axial positions and by four water molecules in the equatorial plane. The acetate ligands are bound to the NiII ion in a monodentate manner through a carboxylate O atom. In the crystal, O-HO hydrogen bonds link the molecules, forming a two-dimensional supramolecular network lying parallel to the ab plane.
For interactions of metal ions with amino acids, see: Daniele et al. (2008); Parkin (2004). For the crystal structures of related 4-chlorophenoxyacetate complexes, see: Liwporncharoenvong & Luck (2005); Smith et al. (1980); Wang et al. (2008).
Data collection: CrysAlis PRO (Oxford Diffraction, 2009); 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: XP in SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2512 ).
This work was supported by a Grant for Fundamental Research from the Center of Science and Technology, Uzbekistan (No. F7-T04841)
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