Nomenclature
CAS number: 10026-17-2
Cobalt difluoride.
CoF
2; mol wt 96.93.
Co 60.80%, F 39.20%.
Description and references
Prepd by the action of HF on anhydr CoCl2: Kwasnik in Handbook of Preparative
Inorganic Chemistry vol. 1, G. Brauer, Ed.
(Academic Press, New York, 2nd ed., 1963) p 267; on CoCO3: Clark, Buchner, J. Am. Chem. Soc. 44, 230 (1922); on Co: Muetterties, Castle, J. Inorg. Nucl. Chem. 18, 148
(1961).
Properties
Rosy-red tetragonal crystals. mp 1100-1200°, forming a red liq.
Volatilizes at about 1400°. d 4.43. Sparingly sol in water; readily sol in warm mineral
acids. Forms di-, tri-, and tetrahydrates, all sol in water; their
aq solns are dec by boiling, forming the oxyfluoride CoF2.CoO.H2O.Use
Catalyst for organic reactions.