Caesium tribromide

Not to be confused with Cerium tribromide.

Caesium tribromide is an inorganic compound with the chemical formula CsBr₃.

Caesium tribromide

Identifiers
CAS Number	17060-10-5 Y
3D model (JSmol)	Interactive image
ChemSpider	21427776
ECHA InfoCard	100.149.967
EC Number	621-081-4
PubChem CID	25021397
CompTox Dashboard (EPA)	DTXSID501312899
InChI InChI=1S/Br3.Cs/c1-3-2;/q-1;+1 Key: AUOXCQZELVDUNB-UHFFFAOYSA-N
SMILES Br[Br-]Br.[Cs+]
Properties
Chemical formula	CsBr3
Molar mass	372.617 g·mol−1
Appearance	Orange solid[1]: 8788  Dark red crystals[2]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

It can be obtained by crystallization from a concentrated aqueous solution of caesium bromide containing large amounts of bromine,^[3] or by the hydrothermal reaction of caesium bromide, caesium bromate, and hydrobromic acid, in which bromine is generated in situ.^[2]

It is isostructural with caesium triiodide and caesium diiodide bromide, and belongs to the orthorhombic Pmnb space group.^[3]

It decomposes at 38 °C.^[4]

It can oxidize some Au(I) complexes to Au(II) or Au(III) complexes.^[5][1]