Osmium heptafluoride is an inorganic chemical compound of osmium metal and fluorine with the chemical formula OsF
7.[2][3] It was first reported in 1966 by the reaction of fluorine and osmium at 600 °C and 400 atm,[4] but later experiments can’t reproduce this compound.[5]
| Names | |
|---|---|
| Other names Osmium(VII) fluoride | |
| Identifiers | |
3D model (JSmol) | |
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| 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 their standard state (at 25 °C [77 °F], 100 kPa). | |
Physical properties
Osmium(VII) fluoride forms 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 of liquid nitrogen.
Chemical properties
Osmium heptafluoride decomposes to osmium hexafluoride when slightly heated:
- 2OsF7 → 2OsF6 + F2