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Gadolinium(III) bromide
Names
	IUPAC name Gadolinium(III) bromide
	Other names Gadolinium tribromide; Gadolinium bromide
Identifiers
CAS Number	13818-75-2;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	75576;
ECHA InfoCard	100.034.072
EC Number	237-494-4;
PubChem CID	83754;
CompTox Dashboard (EPA)	DTXSID9065653 ;
	InChI InChI=1S/3BrH.Gd/h3*1H;/q;;;+3/p-3 Key: KGOKDPWKDBWITQ-UHFFFAOYSA-K;
	SMILES Br[Gd](Br)Br; [Br-].[Br-].[Br-].[Gd+3];
Properties
Chemical formula	GdBr3
Molar mass	396.96 g·mol−1
Appearance	white crystals
Density	2.844 g/cm3
Melting point	770 °C (1,420 °F; 1,040 K)
Boiling point	1,455 °C (2,651 °F; 1,728 K)
Solubility in water	Soluble
Solubility	Soluble in THF, 1,2-Diethoxyethane, p-dioxane, and alkyl amine
Structure
Crystal structure	monoclinic
Space group	C2/m
Lattice constant	a = 7.224±0.005 Å, b = 12.512±0.005 Å, c = 6.84±0.01 Å
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P305+P351+P338
Related compounds
Other anions	Gadolinium(III) fluoride; Gadolinium(III) chloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Gadolinium(III) bromide is a crystalline compound of gadolinium atoms and bromine atoms. This salt is hygroscopic.^[1]

Preparation

Gadolinium(III) bromide can be obtained by the reaction between gadolinium and hydrobromic acid:^[5]

2 Gd + 6 HBr → 2 GdBr₃ + 3 H₂

The anhydrous form can be obtained by heating the hydrate with ammonium bromide.^[5]

1 2 Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 180. ISBN 978-1-4398-1462-8.
1 2 "Gadolinium(III) bromide anhydrous, powder, 99.99% trace rare earth metals basis | Sigma-Aldrich". www.sigmaaldrich.com. Retrieved 21 December 2016.
1 2 "13818-75-2 - Gadolinium(III) bromide, ultra dry, 99.99% (metals basis) - 43673 - Alfa Aesar". www.alfa.com. Retrieved 21 December 2016.
↑ Thomas, H. H.; Baker, W. A. (1973-08-15). "The crystal structure and X-ray diffraction data for anhydrous gadolinium bromide". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 29 (8): 1740–1743. doi:10.1107/S0567740873005443. ISSN 0567-7408.
1 2 Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1077.