Title: Cobaltous Fluoride
CAS Registry Number: 10026-17-2
Additional Names: Cobalt difluoride
Molecular Formula: CoF2
Molecular Weight: 96.93
Percent Composition: Co 60.80%, F 39.20%
Literature 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.
Melting point: mp 1100-1200°
Density: d 4.43
Use: Catalyst for organic reactions.