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Z. Naturforsch. 2014,
69b, 1 – 7
doi:10.5560/ZNB.2014-3291
The Hexaammine Copper(II) Fluoride Monohydrate [Cu(NH3)6][F(H2O)F]: Synthesis and Crystal Structure
AG Fluorchemie, Department Chemie, Technische Universität München, Lichtenbergstraße 4, 85747 Garching, Germany
Reprint requests to PD Dr. Florian Kraus. Fax: +49-89-289-13762. E-mail:
fluorchemie@tum.de
Received October 18, 2013 / published online December 30, 2013
We report the synthesis and crystal structure of the monohydrate of hexaammine copper(II) difluoride, [Cu(NH3)6]F2 · H2O, which was synthesized from CuF2 · 2 H2O in liquid ammonia. The compound crystallizes in the chiral space group P3221 (no. 154) as traffic-blue, plate-shaped crystals with a = 6.738(1), c = 18.210(6) Å, V = 715.9(3) Å3 at 150 K with Z = 3. It contains the rare [F(H2O)F]2− anion bound by strong O–H···F hydrogen bonding.
Key words: Copper(II) Fluoride, Liquid Ammonia, Ammine Complexes, Hydrates, Crystal Structure, Hydrogen Bonds