Iodosyl pentafluoride
# Iodosyl pentafluoride

Iodosyl pentafluoride is an inorganic compound of iodine, fluorine, and oxygen with the chemical formula $IOF_5.$

## Synthesis

* Reaction of iodine heptafluoride with water.

       $IF_7$ + $H_2O$ → $IOF_5$ + 2HF
* Reaction of iodine heptafluoride with silicon dioxide:

       $2IF_7$ + $SiO_2$ → $2IOF_5$ + $SiF_4$

## Physical properties

Iodosyl pentafluoride forms colorless liquid. The molecule of $IOF_5$ is a distorted octahedron O=I(F4)–F. Its melting point 4.5 °C.

## Chemical properties

The compound reacts with graphite to form a black graphite intercalation compound. Iodosyl pentafluoride also forms adducts with arsenic pentafluoride and antimony pentafluoride.

