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Osmium pentafluoride

Osmium pentafluoride
Unit cell of OsF5.png
3D model (JSmol)
Molar mass 285.22 g·mol−1
Appearance blue-green solid
Melting point 70 °C (158 °F; 343 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Osmium pentafluoride is an inorganic compound with the formula OsF5. It is a blue-green solid. Like the pentafluorides of Ru, Rh, and Ir, OsF5 exists as a tetramer in the solid state.


Osmium pentafluoride can be prepared by reduction of osmium hexafluoride with iodine as a solution in Iodine pentafluoride:[1]

10 OsF6 + I2 → 10 OsF5 + 2 IF5


  1. ^ Holloway, John H.; Mitchell, S. J. (1971). "Preparation and Crystal Structure of Osmium Pentafluoride". Journal of the Chemical Society: 2789–94. doi:10.1039/J19710002789.CS1 maint: multiple names: authors list (link)