Osmium heptafluoride
| 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 their standard state (at 25 °C [77 °F], 100 kPa). | |
Osmium heptafluoride is a possible 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 no purported synthesis could be reproduced in 2006, giving only osmium hexafluoride instead.[5]
Physical properties
[edit]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 of liquid nitrogen.
Chemical properties
[edit]Osmium heptafluoride decomposes to osmium hexafluoride when slightly heated:
- 2OsF7 → 2OsF6 + F2
References
[edit]- ^ Bayerische Julius-Maximilians-Universität Würzburg (2006). The Highest Oxidation States of the 5d Transition Metals: a Quantum-Chemical Study (PDF) (Report). Chemical Society. Retrieved 2011-06-20.
- ^ "Osmium heptafluoride". WebElements. Retrieved 19 April 2023.
- ^ Hawkins, Donald T. (6 December 2012). Binary Fluorides: Free Molecular Structures and Force Fields A Bibliography (1957–1975). Springer Science & Business Media. p. 42. ISBN 978-1-4684-6147-3. Retrieved 19 April 2023.
- ^ Glemser, Oskar; Roesky, Herbert W.; Hellberg, Karl-Heinz; Werther, Heinz-Ulrich (1966). "Darstellung und Eigenschaften von Osmiumheptafluorid". Chemische Berichte. 99 (8). Wiley: 2652–2662. doi:10.1002/cber.19660990834. ISSN 0009-2940.
- ^ Shorafa, Hashem; Seppelt, Konrad (1 September 2006). "Osmium(VII) Fluorine Compounds". Inorganic Chemistry. 45 (19): 7929–7934. doi:10.1021/ic0608290. PMID 16961386.
- ^ Edwards, A. J. (1 November 1983). "Structures of the binary fluorides". Advances in Inorganic Chemistry. 27. Academic Press: 108. ISBN 9780080578767. Retrieved 19 April 2023.
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