Iron Fluoride (FeF3)-Powder

Characteristic

Iron(III) fluoride, also known as ferric fluoride, are inorganic compounds with the formula FeF₃(H₂O)_x where x = 0 or 3. Anhydrous iron(III) fluoride is white, whereas the hydrated forms are light pink.

Chemical formula：FeF₃

Molar mass：112.840 g/mol (anhydrous)

                      166.89 g/mol (trihydrate)

Appearance：pale green crystals

Density：3.87 g/cm³ (anhydrous)

                2.3 g/cm3 (trihydrate)

Melting point：> 1,000 °C (1,830 °F; 1,270 K)

Solubility in water：slightly soluble (anhydrous)

                                 49.5 g/100 mL (trihydrate)

Solubility：negligible in alcohol, ether, benzene

Magnetic susceptibility (χ)：+13,760·10−6 cm³/mol

Crystal structure：Rhombohedral, hR24

Application

The primary commercial use of iron(III) fluoride in the production of ceramics.

Some cross coupling reaction are catalyzed by ferric fluoride-based compounds. Specifically the coupling of biaryl compounds are catalyzed by hydrated iron(II) fluoride complexes of N-heterocyclic carbene ligands. Other metal fluorides also catalyse similar reactions. Iron(III) fluoride has also been shown to catalyze chemoselective addition of cyanide to aldehydes to give the cyanohydrins.

FeF3.pdf