Ruthenium (VI) fluoride
Structural formula | |||||||||||||
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General | |||||||||||||
Surname | Ruthenium (VI) fluoride | ||||||||||||
other names |
Ruthenium hexafluoride |
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Molecular formula | RuF 6 | ||||||||||||
Brief description |
dark brown crystalline solid |
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External identifiers / databases | |||||||||||||
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properties | |||||||||||||
Molar mass | 215.07 g mol −1 | ||||||||||||
Physical state |
firmly |
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density |
3.68 g cm −3 (−140 ° C) |
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Melting point |
54 ° C |
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safety instructions | |||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Ruthenium (VI) fluoride (RuF 6 ), usually also ruthenium hexafluoride , is a chemical compound of the elements ruthenium and fluorine and belongs to the group of hexafluorides .
presentation
Ruthenium hexafluoride is produced by direct conversion of the metal in a gas stream of F 2 / Ar at 400-450 ° C. The yields are below 10%.
properties
Ruthenium hexafluoride is a dark brown crystalline solid that melts at 54 ° C. It crystallizes in the orthorhombic crystal system (measured at −140 ° C) in the space group Pnma (No. 62) with the lattice parameters a = 931.3 pm , b = 848.4 pm and c = 491.0 pm and four formula units per unit cell with a calculated density of 3.68 g · cm −3 . The RuF 6 molecule is octahedral ( O h ); the Ru – F bond length is 181.8 pm.
Individual evidence
- ↑ a b c David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Properties of the Elements and Inorganic Compounds, pp. 4-86.
- ↑ a b c d T. Drews, J. Supeł, A. Hagenbach, K. Seppelt: "Solid State Molecular Structures of Transition Metal Hexafluorides", in: Inorganic Chemistry , 2006 , 45 (9), pp. 3782-3788; doi : 10.1021 / ic052029f ; PMID 16634614 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
literature
- Gmelin's Handbook of Inorganic Chemistry , System No. 63, Ruthenium, Supplement, pp. 266-268.