Pentaoxygen difluoride

Pentaoxygen difluoride is a binary inorganic compound of fluorine and oxygen with the chemical formula O₅F₂.^[1][2] The compound is one of many known oxygen fluorides.

Pentaoxygen difluoride

Identifiers
CAS Number	12191-79-6 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/F2O5/c1-3-5-7-6-4-2 Key: YDWQUFUNVRYGQP-UHFFFAOYSA-N
SMILES FOOOOOF
Properties
Chemical formula	F2O5
Molar mass	117.992 g·mol−1
Appearance	reddish-brown liquid at 90 K
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

The compound can be prepared by electric discharges through the F₂—O₂ mixture of the certain molar ratio at 60 to 77 K. The ratio is predicted to be 5:2.^[3]

Physical properties

Pentaoxygen difluoride is an oxidizing agent. At 90 K, the compound looks like a reddish-brown liquid and as an oil at 77  K.^[3]

At 77 K, the compound is insoluble in liquid N₂, soluble in liquid O₂ and CH₄. At 65 K, it is soluble in liquid OF₂.^[3]