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| Names | |||
|---|---|---|---|
| IUPAC name ruthenium(VI) fluoride | |||
| Other names ruthenium(6+) hexafluoride | |||
| Identifiers | |||
3D model (JSmol) | |||
| ChemSpider | |||
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| Properties | |||
| RuF6 | |||
| Molar mass | 215.07 g/mol | ||
| Appearance | dark brown crystalline solid[1] | ||
| Density | 3.54 g/cm3 | ||
| Melting point | 54 °C (129 °F; 327 K)[1] | ||
| Boiling point | 200 °C (392 °F, 473.15 K) (decomposes)[2] | ||
| reacts | |||
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |||
Ruthenium hexafluoride, alsoruthenium(VI) fluoride (RuF6), is a compound ofruthenium andfluorine and one of the seventeen known binaryhexafluorides.
Ruthenium hexafluoride was discovered by American radiochemists in 1961, soon after the discovery oftechnetium hexafluoride.[3] It is made by a direct reaction of ruthenium metal in a gas stream offluorine andargon at 400–450 °C. The yields of this reaction are less than 10%.[4]
Ruthenium hexafluoride is a dark brown crystalline solid that melts at 54 °C.[1] The solid structure measured at −140 °C isorthorhombic space groupPnma.Lattice parameters area = 9.313 Å,b = 8.484 Å, andc = 4.910 Å. There are fourformula units (in this case, discrete molecules) perunit cell, giving a density of 3.68 g·cm−3.[4]
The RuF6 molecule itself (the form important for the liquid or gas phase) hasoctahedral molecular geometry, which has point group (Oh). The Ru–Fbond length is 1.818 Å.[4]
Media related toRuthenium hexafluoride at Wikimedia Commons-fluoride.svg)
