Osmium heptafluoride explained

Osmium heptafluoride is a possible inorganic chemical compound of osmium metal and fluorine with the chemical formula .^{[1] [2]} It was first reported in 1966 by the reaction of fluorine and osmium at 600 °C and 400 atm,^[3] but no purported synthesis could be reproduced in 2006, giving only osmium hexafluoride instead.^[4]

Physical properties

If it exists, osmium(VII) fluoride is supposedly a bluish-yellow hygroscopic substance, extremely unstable.^[5] 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:

Notes and References

1. Web site: Osmium heptafluoride . WebElements . 19 April 2023.
2. Book: Hawkins . Donald T. . Binary Fluorides: Free Molecular Structures and Force Fields A Bibliography (1957–1975) . 6 December 2012 . . 978-1-4684-6147-3 . 42 . 19 April 2023 . en.
3. Glemser . Oskar . Roesky . Herbert W. . Hellberg . Karl-Heinz . Werther . Heinz-Ulrich . Darstellung und Eigenschaften von Osmiumheptafluorid . Chemische Berichte . Wiley . 99 . 8 . 1966 . 0009-2940 . 10.1002/cber.19660990834 . 2652–2662.
4. Shorafa . Hashem . Seppelt . Konrad . Osmium(VII) Fluorine Compounds . . 1 September 2006 . 45 . 19 . 7929–7934 . 10.1021/ic0608290. 16961386 .
5. Edwards . A. J. . Structures of the binary fluorides . Advances in Inorganic Chemistry . 1 November 1983 . 27 . 108 . 19 April 2023 . . 9780080578767 . en.