Darstellung und Kristallstruktur von Kupfer(II)-monofluorophosphat-Dihydrat CuPO3F · 2H2O

Salts of Halogenophosphoric Acids. XVII. Preparation and Crystal Structure of Copper(II) Monofluorophosphate Dihydrate CuPO₃F · 2H₂O Copper(II) monofluorophosphate dihydrate, CuPO₃F · 2H₂O 1 was obtained by the reaction of aqueous NH₄HPO₃F and acid (NH₄)₂PO₃F solutions, respectively, using acetone or ethanol as precipitating agents. The thermal dehydration of 1 gives the water-free copper monofluorophosphate CuPO₃F ( 2 ). 1 crystallizes in the monoclinic space group P2₁/c with a = 761,44, b = 780,97, c = 921,02 pm, β = 112,94° and Z = 4.