Dysprosium(III) bromide

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

Dysprosium(III) bromide

Identifiers
CAS Number	14456-48-5 anhydrous Y 14890-43-8 hexahydrate Y
3D model (JSmol)	Interactive image
ChemSpider	76182
ECHA InfoCard	100.034.933
EC Number	238-443-9
PubChem CID	84453
CompTox Dashboard (EPA)	DTXSID20932334
InChI InChI=1S/3BrH.Dy/h3*1H;/q;;;+3/p-3 Key: GBLDKMKYYYAAKD-UHFFFAOYSA-K
SMILES [Br-].[Br-].[Br-].[Dy+3]
Properties
Appearance	colourless solid (anhydrous)[1] white solid (hexahydrate)[2]
Density	5.8 g·cm−3[3]
Melting point	881 °C (1,154 K)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

Dysprosium(III) bromide can be obtained by reacting dysprosium with bromine:^[4]

2Dy + 3Br₂ → 2DyBr₃

Dysprosium bromide hexahydrate can be obtained by crystallization from its solution,^[2] which can be heated with ammonium bromide in vacuum to obtain the anhydrous form.^[1]

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:^[5]

Dy₂O₃ + Al₂Br₆ → Al₂O₃ + 2 DyBr₃

Properties

Dysprosium(III) bromide is a white-gray hygroscopic solid that is soluble in water.^[6] It has a trigonal crystal structure of the bismuth(III) iodide type with space group R3 (No. 148).^[7]