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Acta Cryst. (2009). E65, i23-i24 [ doi:10.1107/S1600536809006874 ]
Abstract: The title compound, octaaqua(hydrogenfluorido)dicopper(II) hexafluoridoferrate(III) dihydrate, was synthesized under hydrothermal conditions. The Cu atom is coordinated by one F and five O atoms within a highly distorted octahedron, forming dimeric [Cu2(H2O)8HF2]3+ units by edge sharing. These units are hydrogen bonded to [FeF6]3- anions and to an interstitial water molecule. The former feature Fe3+ on a special position (
). The dimeric copper units are linked to adjacent dimers by F-H
F hydrogen bonds. Additional O-HO and O-HF hydrogen bonds help to consolidate the crystal packing.
Online 6 March 2009
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