Acta Cryst. (2007). E63, m2308  [ doi:10.1107/S1600536807038226 ]

trans-Bis(acetonitrile-N)bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato-²O,O')nickel(II)

H. Southerland, J. Donovan, B. Twamley and J. Manson

Abstract: The title compound, [Ni(C₅HF₆O₂)₂(C₂H₃N)₂], was obtained as an unintentional by-product in the reaction of Ni(hfac)₂ (hfac is hexafluoroacetylacetonate) with pyrazine N,N'-dioxide in acetonitrile. The molecule is centrosymmetric and the ligands are trans to one another, with the Ni^II atom on a position with 2/m symmetry. The CF₃ groups are in a symmetry-imposed eclipsed conformation. The acetonitrile methyl group is involved in weak non-classical C-HO intermolecular hydrogen bonding to the propanedionate O atoms. This forms a chain synthon parallel to the b axis. The chains are further arranged into sheets parallel to the bc plane.

Online 10 August 2007

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