Osmium pentafluoride

Osmium pentafluoride
Identifiers
CAS Number	31576-40-6;
3D model (JSmol)	monomer: Interactive image; tetramer: Interactive image;
PubChem CID	15797581;
	InChI InChI=1S/5FH.Os/h5*1H;/q;;;;;+5/p-5 Key: RFWLPKSDISVSGM-UHFFFAOYSA-I;
	SMILES monomer: F[Os](F)(F)(F)F; tetramer: F[Os-]1(F)(F)(F)[F+][Os-](F)(F)(F)(F)[F+][Os-](F)(F)(F)(F)[F+][Os-](F)(F)(F)(F)[F+]1;
Properties
Chemical formula	F5Os
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.

Preparation

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

References

^ 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.

[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.

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