Английская Википедия:Iodine pentafluoride

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Iodine pentafluoride is an interhalogen compound with chemical formula IF5. It is one of the fluorides of iodine. It is a colorless liquid, although impure samples appear yellow. It is used as a fluorination reagent and even a solvent in specialized syntheses.[1]

Preparation

It was first synthesized by Henri Moissan in 1891 by burning solid iodine in fluorine gas.[2] This exothermic reaction is still used to produce iodine pentafluoride, although the reaction conditions have been improved.[3]

I2 + 5 F2 → 2 IF5

Reactions

IF5 reacts vigorously with water forming hydrofluoric acid and iodic acid:

IF5 + 3 H2O → HIO3 + 5 HF

Upon treatment with fluorine, it converts to iodine heptafluoride:[4]

IF5 + F2 → IF7

It has been used as a solvent for handling metal fluorides. For example, the reduction of osmium hexafluoride to osmium pentafluoride with iodine is conducted in a solution in iodine pentafluoride:[5]

10 OsF6 + I2 → 10 OsF5 + 2 IF5

Primary amines react with iodine pentafluoride forming nitriles after hydrolysis.[6]

References

Шаблон:Reflist

Further reading

External links

Шаблон:Iodine compounds Шаблон:Fluorine compounds