Iodine trifluoride dioxide
# Iodine trifluoride dioxide

Iodine trifluoride dioxide is an inorganic compound of iodine, fluorine, and oxygen with the chemical formula $IO_2F_3.$ The compound was first obtained by Engelbrecht and Petersy in 1969.

## Synthesis

Iodine trifluoride dioxide may be formed by the reaction of $HOIOF_4$ and oleum.

## Physical properties

Iodine trifluoride dioxide forms yellow crystals, which melt at 41 °C. Decomposes under direct sunlight or heating.

The molecules in the crystals are dimers. The compound is monomeric above 100 °C.

## Chemical properties

Iodine trifluoride dioxide decomposes when heated:

       $2IO_2F_3$ → $2IOF_3$ + $O_2$
