Samarium(III) bromide

Samarium(III) bromide is a crystalline compound of one samarium and three bromine atoms with the chemical formula of SmBr₃. The compound has a crystal structure isotypic to that of plutonium(III) bromide.^[4][5]

Samarium(III) bromide

Names
IUPAC name samarium(III) bromide
Other names samarium tribromide tribromosamarium
Identifiers
CAS Number	13759-87-0
3D model (JSmol)	Interactive image Interactive image
ChemSpider	75528
ECHA InfoCard	100.033.938
EC Number	237-347-4
PubChem CID	24868613
CompTox Dashboard (EPA)	DTXSID4065608
InChI InChI=1S/3BrH.6H2O.Sm/h3*1H;6*1H2;/q;;;;;;;;;+3/p-3 Key: LXJDCZVUWJNXRL-UHFFFAOYSA-K
SMILES Br[Sm](Br)Br [Br-].[Br-].[Br-].[Sm+3]
Properties
Chemical formula	SmBr3
Molar mass	390.07 g·mol−1
Appearance	Light yellow solid[1][2]
Melting point	700 °C (1,292 °F; 973 K)<[3]
Magnetic susceptibility (χ)	+972.0·10−6 cm3/mol
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335[3]
Precautionary statements	P261, P305+P351+P338[3]
Related compounds
Other anions	Samarium(III) fluoride Samarium(III) chloride
Other cations	Samarium(II) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Preparation

SmBr₃·6H₂O can be crystallized by dissolving samarium oxide in 40% hydrobromic acid. The hydrate and ammonium bromide are heated in a vacuum to obtain the anhydrous form of samarium(III) bromide.^[2]

Other compounds

Samarium(III) bromide forms some compounds with hydrazine, such as SmBr₃·3N₂H₄·H₂O which is a pale yellow needle-shaped crystal that is soluble in water and ethanol but insoluble in benzene, with d_20 °C = 3.147 g/cm³.^[6]