Curium(IV) fluoride

Curium(IV) fluoride is an inorganic chemical compound, a salt of curium and fluorine with the chemical formula CmF4.

Synthesis
It is reported that the compound can be prepared by fluorination of CmF3 with elemental fluorine at 400 °C.


 * 2CmF3 + F2 -> 2CmF4

Physical properties
The compound forms brownish-tan solid composed of Cm4+ and F− ions. It has a monoclinic crystal structure of the space group C2/c (No. 15), and lattice parameters a = 1250 pm, b = 1049 pm, and c = 818 pm. It has the same crystal structure as that of UF4.