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Rhodium trifluoride

Names
IUPAC name Rhodium(III) fluoride
Other names Rhodium trifluoride
Identifiers
CAS Number	60804-25-3
3D model (JSmol)	Interactive image
ChemSpider	28687977
PubChem CID	21688473
CompTox Dashboard (EPA)	DTXSID601336941 DTXSID90578682, DTXSID601336941
InChI InChI=1S/3FH.Rh/h3*1H;/q;;;+3/p-3Key: TXUZMGFRPPRPQA-UHFFFAOYSA-K
SMILES ...
Properties
Chemical formula	RhF3
Molar mass	159.90070 g·mol
Appearance	red-brown solid
Density	5.38 g/cm
Structure
Crystal structure	Trigonal
Space group	R3c
Lattice constant	a = 4.873, c = 13.550
Formula units (Z)	6
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

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:

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.

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

References

1. 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.
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.
3. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1119–1120. ISBN 978-0-08-037941-8.

• Fluorides
• Platinum group halides
• Rhodium(III) compounds