Rhodium hexafluoride
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Names | |
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IUPAC name
rhodium(VI) fluoride
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Other names
rhodium hexafluoride
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Identifiers | |
13693-07-7 | |
Jmol 3D model | Interactive 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] |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
- ↑ 1.0 1.1 1.2 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.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
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Further reading
- Gmelins Handbuch der anorganischen Chemie, System Nr. 63, Rhodium, Part B1, pp. 266–268.
External links
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- Fluorides
- Hexafluorides
- Rhodium compounds
- Octahedral compounds