Rhodium trifluoride

Rhodium(III) fluoride or rhodium trifluoride is the inorganic compound with the formula RhF₃. It is a red-brown, diamagnetic solid.

Synthesis and structure

The compound is prepared by fluorination of rhodium trichloride:

2 RhCl₃ + 3 F₂ → 2 RhF₃ + 3 Cl₂

It can also be obtained by direct combination of the elements:^[3]

2 Rh + 3 F₂ → 2 RhF₃

Anhydrous RhF₃ is insoluble in water and does not react with it, but the hydrates RhF₃·6H₂O and RhF₃·9H₂O can be prepared by adding hydrofluoric acid to aqueous rhodium(III) solutions.^[3]

According to X-ray crystallography, the compound adopts the same structure as vanadium trifluoride, wherein the metal achieves octahedral coordination geometry.^[2]

References

^ hrsg. von Georg Brauer. Unter Mitarb. von M. Baudler (1975). Handbuch der präparativen anorganischen Chemie / 1 (in German). Stuttgart: Enke. p. 280. ISBN 3-432-02328-6. OCLC 310719485.
^ ^a ^b L. Grosse, R. Hoppe (1987). "Zur Kenntnis von Sr₂RhF₇. (Mit einer Bemerkung zur Kristallstruktur von RhF₃)". Zeitschrift für Anorganische und Allgemeine Chemie. 552 (9): 123–31. doi:10.1002/zaac.19875520914.
^ ^a ^b Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1119–1120. ISBN 978-0-08-037941-8.

[1] rsg. von Georg Brauer. Unter Mitarb. von M. Baudler (1975). Handbuch der präparativen anorganischen Chemie / 1 (in German). Stuttgart: Enke. p. 280. ISBN 3-432-02328-6. OCLC 310719485.

[gro-2] L. Grosse, R. Hoppe (1987). "Zur Kenntnis von Sr₂RhF₇. (Mit einer Bemerkung zur Kristallstruktur von RhF₃)". Zeitschrift für Anorganische und Allgemeine Chemie. 552 (9): 123–31. doi:10.1002/zaac.19875520914.

[G&E-3] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1119–1120. ISBN 978-0-08-037941-8.

[3]

[2]