Iodine trifluoride

Iodine trifluoride

Names
IUPAC name Iodine trifluoride
Other names iodine(III) fluoride
Identifiers
CAS Number	22520-96-3
ChemSpider	10329096
Jmol interactive 3D	Image
InChI InChI=1S/F3I/c1-4(2)3 Key: VJUJMLSNVYZCDT-UHFFFAOYSA-N 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).
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Infobox references

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.

Reactions

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.

Chemical properties

Iodine trifluoride has five electron pairs, and like chlorine trifluoride is T-shaped as predicted by VSEPR Theory.^[1]

References

1. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9.