Thorium oxyfluoride

Thorium oxyfluoride is an inorganic compound of thorium metal, fluorine, and oxygen with the chemical formula.

Synthesis

 * Thorium oxyfluoride can be prepared from partial hydrolysis of thorium tetrafluoride in moist air at elevated temperatures, about 1000 °C.


 * ThF4 + H2O -> ThOF2 + 2 HF


 * Reaction of thorium tetrafluoride with thorium dioxide at 600 °C:


 * ThF4 + ThO2 -> 2 ThOF2

Physical properties
The compound forms white, insoluble amorphous powder.

Uses
The compound is used as a protective coating on reflective surfaces.