Rhodium hexafluoride
-fluoride.svg.png) | |
| Names | |
|---|---|
| IUPAC name
rhodium(VI) fluoride | |
| Other names
rhodium hexafluoride | |
| Identifiers | |
| 13693-07-7 | |
| Jmol interactive 3D | Image |
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| Properties | |
| F6Rh | |
| Molar mass | 216.91 g/mol |
| Appearance | black crystalline solid[1] |
| Density | 3.71g/mL[2] |
| Melting point | ≈ 70 °C (158 °F; 343 K)[1] |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Rhodium hexafluoride, also rhodium(VI) fluoride, (RhF6) is the inorganic compound of rhodium and fluorine. A black volatile solid,[1] it is a highly reactive material, and a rare example of a rhodium(VI) compound.
Synthesis, structure, properties
Rhodium hexafluoride is prepared by reaction of rhodium metal with an excess of elemental fluorine:[3]
- Rh + 3 F2 → RhF6
The RhF6 molecule has octahedral molecular geometry. Consistent with its d3 configuration, the six Rh–F bond lengths are equivalent, being 1.824 Å.[2] It crystallises in an orthorhombic space group Pnma with lattice parameters of a = 9.323 Å, b = 8.474 Å, and c = 4.910 Å.
Like some other metal fluorides, RhF6 is highly oxidising. It attacks even glass even in the absence of water.[3] It can even react with elemental oxygen.[4]
References
- 1 2 3 CRC Handbook of Chemistry and Physics, 90th Edition, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, Physical Constants of Inorganic Compounds, p. 4-85.
- 1 2 Drews, T.; Supeł, J.; Hagenbach, A.; Seppelt, K. (2006). "Solid State Molecular Structures of Transition Metal Hexafluorides". Inorganic Chemistry 45 (9): 3782–3788. doi:10.1021/ic052029f. PMID 16634614.
- 1 2 《无机化学丛书》第九卷：锰分族、铁系、铂系 (in Chinese). 北京: 科学出版社. p. 478. ISBN 7-03-002238-6.
- ↑ Riedel, Sebastian; Kaupp, Martin (2009). "The highest oxidation states of the transition metal elements" (PDF). Coordination Chemistry Reviews (Elsevier) 253: 606–624. doi:10.1016/j.ccr.2008.07.014.
Further reading
- Gmelins Handbuch der anorganischen Chemie, System Nr. 63, Rhodium, Part B1, pp. 266–268.
External links
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