Iodine trifluoride

Iodine trifluoride is an interhalogen compound with the chemical formula IF₃. It is a yellow solid which decomposes above −28 °C. It can be synthesised from the elements, but care must be taken to avoid the formation of IF₅.

Quick Facts Names, Identifiers ...

Iodine trifluoride

Names
IUPAC name Iodine trifluoride
Other names iodine(III) fluoride
Identifiers
CAS Number	22520-96-3 Y
3D model (JSmol)	Interactive image
ChemSpider	10329096 Y
PubChem CID	13932268
CompTox Dashboard (EPA)	DTXSID70552824
InChI InChI=1S/F3I/c1-4(2)3 Y Key: VJUJMLSNVYZCDT-UHFFFAOYSA-N Y InChI=1/F3I/c1-4(2)3 Key: VJUJMLSNVYZCDT-UHFFFAOYAM
SMILES FI(F)F
Properties
Chemical formula	IF3
Molar mass	183.9 g/mol
Appearance	yellow solid
Melting point	decomposes above −28 °C
Related compounds
Other anions	iodine trichloride
Other cations	bromine trifluoride
Related compounds	chlorine trifluoride iodine pentafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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F₂ reacts with I₂ to yield IF₃ at −45 °C in CCl₃F. Alternatively, at low temperatures, the fluorination reaction I₂ + 3XeF₂ → 2IF₃ + 3Xe can be used. Not much is known about iodine trifluoride as it is so unstable.

The iodine atom of iodine trifluoride has five electron pairs, of which two are lone-pairs, and the molecule is T-shaped as predicted by VSEPR Theory.^[1]