Selenoyl fluoride

Selenoyl fluoride, selenoyl difluoride, selenium oxyfluoride, or selenium dioxydifluoride is a chemical compound with the formula SeO₂F₂.

Selenoyl fluoride

Identifiers
CAS Number	14984-81-7 Y
3D model (JSmol)	Interactive image
ChemSpider	10329076 N
PubChem CID	23236013
CompTox Dashboard (EPA)	DTXSID10631420
InChI InChI=1S/F2O2Se/c1-5(2,3)4 N Key: VCPFQVXWYPMUKZ-UHFFFAOYSA-N N InChI=1/F2O2Se/c1-5(2,3)4 Key: VCPFQVXWYPMUKZ-UHFFFAOYAS
SMILES O=[Se](=O)(F)F
Properties
Chemical formula	SeO2F2
Molar mass	148.95 g/mol
Appearance	Gas.
Melting point	−99.5 °C (−147.1 °F; 173.7 K)[1]
Boiling point	−8.4 °C (16.9 °F; 264.8 K)[2]
Related compounds
Other cations	SO2F2
Related compounds	SeF6, SeO3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Structure

The shape of the molecule is a distorted tetrahedron with the O-Se-O angle being 126.2°, the O-Se-F angle being 108.0° and F-Se-F being 94.1°.^[3] The Se-F bond length is 1.685 Å and the selenium to oxygen bond is 1.575 Å long.^[4]

Formation

Selenoyl fluoride can be formed by the action of warm fluorosulfonic acid on barium selenate^[5] or selenic acid. SeO₃ + SeF₄ can give this gas along with other oxyfluorides.

Reactions

Selenoyl fluoride is more reactive than its analogon sulfuryl fluoride. It is easier to hydrolyse and to reduce. It may react violently upon contact with ammonia.

Selenoyl fluoride reacting with xenon difluoride gives FXeOSeF₅.^[6]