Chemistry:Rhodium trifluoride

From HandWiki
Revision as of 19:59, 5 February 2024 by WikiEditor (talk | contribs) (over-write)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Rhodium trifluoride
RhF3.png
Names
IUPAC name
Rhodium(III) fluoride
Other names
Rhodium trifluoride
Identifiers
3D model (JSmol)
ChemSpider
Properties
RhF3
Molar mass 159.90070 g·mol−1
Appearance red-brown solid
Density 5.38 g/cm3[1]
Structure
Trigonal
R3c
a = 4.873, c = 13.550[2]
6
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 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 RhCl
3
+ 3 F
2
→ 2 RhF
3
+ 3 Cl
2

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

2 Rh + 3 F
2
→ 2 RhF
3

Anhydrous RhF
3
is insoluble in water and does not react with it, but the hydrates RhF
3
 · 6H2O
and RhF
3
 · 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

  1. hrsg. von Georg Brauer. Unter Mitarb. von M. Baudler (1975) (in de). Handbuch der präparativen anorganischen Chemie / 1.. Stuttgart: Enke. p. 280. ISBN 3-432-02328-6. OCLC 310719485. 
  2. 2.0 2.1 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. 3.0 3.1 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1119-1120. ISBN 978-0-08-037941-8.