| Names | |
|---|---|
| Other names Osmium(VII) fluoride | |
| Identifiers | |
3D model (JSmol) | |
| |
| |
| Properties | |
| F7Os | |
| Molar mass | 323.22 g·mol−1 |
| Structure | |
| Pentagonal bipiramidal (calculated)[1] | |
| Related compounds | |
Related compounds | Rhenium heptafluoride |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Osmium heptafluoride is a possibleinorganic chemical compound ofosmium metal andfluorine with the chemical formulaOsF
7.[2][3] It was first reported in 1966 by the reaction of fluorine and osmium at 600 °C and 400 atm,[4] but no purported synthesis could be reproduced in 2006, giving onlyosmium hexafluoride instead.[5]
If it exists, osmium(VII) fluoride is supposedly a bluish-yellow hygroscopic substance, extremely unstable.[6] The compound starts decomposing at –100 °C. It should be stored in a nickel vessel at the temperature ofliquid nitrogen.
Osmium heptafluoride decomposes toosmium hexafluoride when slightly heated:
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