Seleninyl fluoride

Seleninyl fluoride is an oxyfluoride of selenium with the chemical formula SeOF₂.

Seleninyl fluoride

Names
Other names selenium difluoride oxide
Identifiers
CAS Number	7783-43-9 Y
3D model (JSmol)	Interactive image
ChemSpider	10329070
PubChem CID	23236009
UNII	U8FGC2C7TN
CompTox Dashboard (EPA)	DTXSID10703777
InChI InChI=1S/F2OSe/c1-4(2)3 Key: CXZZMNPTKAXBFL-UHFFFAOYSA-N
SMILES O=[Se](F)F
Properties
Chemical formula	F2OSe
Molar mass	132.967 g·mol−1
Appearance	colourless fuming liquid[1]
Boiling point	125[1] °C (257 °F; 398 K)
Structure
Dipole moment	3.18±0.02 D[2]
Related compounds
Other anions	selenium oxychloride selenium oxybromide
Other cations	thionyl fluoride
Related compounds	selenium dioxydifluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

Seleninyl fluoride can be produced by the reaction of selenium oxychloride and potassium fluoride.^[3]

2 KF + SeOCl₂ → 2 KCl + SeOF₂

It can also be produced by the reaction of selenium tetrafluoride with water or selenium dioxide.^[2]

SeF₄ + H₂O → SeOF₂ + 2 HF

SeF₄ + SeO₂ → 2 SeOF₂

The reaction of selenium dioxide and sulfur tetrafluoride also produces seleninyl fluoride.^[4]

SeO₂ + SF₄ → SeOF₂ + SOF₂

Reactions

Seleninyl fluoride reacts with xenon difluoride to form Xe(OSeF₅)₂.^[4]

3 XeF₂ + 2 SeOF₂ → Xe(OSeF₅)₂ + 2 Xe

It reacts with fluorine gas and potassium fluoride to form pentafluoroselenium hypofluorite.^[5][6]

SeOF₂ + KF → K⁺[SeOF₃]⁻ —^F₂→ K⁺[SeOF₅]⁻ —^F₂→ KF + SeOF₆

Uses

Seleninyl fluoride have been used as specialty solvents.^[7]