Dysprosium(III) bromide explained

Dysprosium(III) bromide is an inorganic compound of bromine and dysprosium, with the chemical formula of DyBr₃.

Preparation

Dysprosium(III) bromide can be obtained by reacting dysprosium with bromine:^[1]

2Dy + 3Br₂ → 2DyBr₃

Dysprosium bromide hexahydrate can be obtained by crystallization from its solution, which can be heated with ammonium bromide in vacuum to obtain the anhydrous form.

Dysprosium(III) oxide and aluminium bromide (in the form of Al₂Br₆ at a high temperature react a DyAl₃Br₁₂, which decomposes to dysprosium(III) bromide at a lower temperature:^[2]

Dy₂O₃ + Al₂Br₆ → Al₂O₃ + 2 DyBr₃

Properties

Dysprosium(III) bromide is a white-gray hygroscopic solid that is soluble in water. It has a trigonal crystal structure of the bismuth(III) iodide type with space group R3 (No. 148).^[3]

Notes and References

1. WebElements: Chemical reactions of Dysprosium
2. 杨冬梅, 于锦, 蒋军辉,等. 化学气相传输法制备无水溴化镝. 石油化工高等学校学报, 2003, 16(4). .
3. Book: Taschenbuch für Chemiker und Physiker. 3540600353. 442, 1386 . Ans . Jean d' . Lax . Ellen . December 1997 . Springer .