Curium(III) bromide is the

bromide A bromide ion is the negatively charged form (Br−) of the element bromine, a member of the halogens group on the periodic table. Most bromides are colorless. Bromides have many practical roles, being found in anticonvulsants, flame-retard ...

salt of

curium Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. This transuranic actinide element was named after eminent scientists Marie and Pierre Curie, both known for their research on radioactivity. Curium was first inten ...

. It has an

orthorhombic In crystallography, the orthorhombic crystal system is one of the 7 crystal systems. Orthorhombic Lattice (group), lattices result from stretching a cubic crystal system, cubic lattice along two of its orthogonal pairs by two different factors, res ...

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 Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. This transuranic actinide element was named after eminent scientists Marie and Pierre Curie, both known for their research on radioactivity. Curium was first intenti ...

and

hydrobromic acid Hydrobromic acid is an aqueous solution of hydrogen bromide. It is a strong acid formed by dissolving the diatomic molecule hydrogen bromide (HBr) in water. "Constant boiling" hydrobromic acid is an aqueous solution that distills at and contains ...

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 In mathematics, physics and chemistry, a space group is the symmetry group of a repeating pattern in space, usually in three dimensions. The elements of a space group (its symmetry operations) are the rigid transformations of the pattern that ...

Cmcm (No. 63) and lattice parameters ''a'' = 405 pm, ''b'' = 1266 pm and ''c'' = 912 pm. Its crystal structure is isostructural with

plutonium(III) bromide Plutonium(III) bromide is an inorganic salt of bromine and plutonium with the formula PuBr3. This radioactive green solid has few uses, however its crystal structure is often used as a structural archetype in crystallography. Crystal structure ...

References

{{Actinide halides Curium compounds bromides Actinide halides