Curium(III) bromide

Curium bromide is the bromide salt of curium. It has an orthorhombic crystal structure.

Preparation

Curium bromide can be produced by reacting curium chloride and ammonium bromide in a hydrogen atmosphere at 400–450 °C.
It can also be produced by reacting curium(III) oxide and hydrobromic acid at 600 °C.

Properties

Curium bromide is an ionic compound composed of Cm³⁺ and Br⁻, appearing as a colorless solid. It is orthorhombic, with space group Cmcm and lattice parameters a = 405 pm, b = 1266 pm and c = 912 pm. Its crystal structure is isostructural with plutonium(III) bromide.