Английская Википедия:Iodine pentafluoride
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
Further reading
External links
- WebBook page for IF5
- National Pollutant Inventory - fluoride and compounds fact sheet
- web elements listing
Шаблон:Iodine compounds Шаблон:Fluorine compounds
