Received 27 July 2009
The title compound, [Ni(C2Cl3O2)2(C5H5N)4], was prepared by the reaction of pyridine and trichloroacetatonickel(II) in ethanol solution at room temperature. The NiII atom is located on a twofold rotation axis and has a slightly distorted octahedral coordination made up of four N atoms of the pyridine ligands and two O atoms of trichloroacetate anions. The molecular structure and packing are stabilized by intra- and intermolecular C-HO hydrogen-bonding interactions.
For the structural and magnetic properties of transition metal complexes involving a pyridine or a substituted pyridine ligand, see: Crawford & Hatfield (1977); Marsh et al. (1981); Swank & Willett (1980). For Ni-O and Ni-N bond lengths, see: Bentiss et al. (2002); Rodopoulos et al. (2001).
Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT; 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: AT2853 ).
The authors thank the Natural Science Foundation of Shandong Province for support (No. Y2008B30).
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