Curium(IV) fluorideCurium fluoride is an inorganic chemical compound, a salt of curium and fluorine with the chemical formula.SynthesisIt is reported that the compound can be prepared by fluorination of [Curium(III) fluoride|] with elemental fluorine at 400 °C.Physical propertiesThe compound forms brownish-tan solid composed of Cm4+ and F− ions. It has a monoclinic crystal structure of the space group C2/c, and lattice parameters a = 1250 pm, b = 1049 pm, and c = 818 pm. It has the same crystal structure as that of [Uranium tetrafluoride|].