Terbium(III) bromide (TbBr3) is a crystalline chemical compound.[5]

Quick Facts Names, Identifiers ...
Terbium(III) bromide
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Names
Other names
terbium tribromide
Identifiers
3D model (JSmol)
ECHA InfoCard 100.034.932 Edit this at Wikidata
EC Number
  • 238-442-3
  • InChI=1S/3BrH.Tb/h3*1H;/q;;;+3/p-3
  • [Br-].[Br-].[Br-].[Tb+3]
Properties
TbBr3
Molar mass 398.637 g/mol
Appearance white powder (hexahydrate)[1]
Density 4.62 g/cm3[2]
Melting point 827[3] °C (1,521 °F; 1,100 K)
Boiling point 1,490[4] °C (2,710 °F; 1,760 K)
soluble[4]
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Production and properties

Terbiun(III) bromide can be produced by heating terbium metal or terbium(III) oxide with ammonium bromide.[6]

Tb2O3 + 6 NH4Br → 2 TbBr3 + 6 NH3 + 3 H2O

A solution of terbium(III) bromide can crystallize a hexahydrate. When heating the hexahydrate, it will dehydrate and produce some terbium oxybromide (TbOBr).[7]

Terbium(III) bromide is a white solid that is soluble in water.[4] Its crystal structure is the same as bismuth iodide.[8]

References

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