Terbium(III) bromide

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 312039144

| Name = Terbium(III) bromide

| ImageFile =Kristallstruktur Bismut(III)-iodid.png

| ImageName = Terbium(III) bromide

| OtherNames = terbium tribromide

|Section1={{Chembox Identifiers

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 14456-47-4

| PubChem = 84452

| EINECS = 238-442-3

| InChI = 1S/3BrH.Tb/h3*1H;/q;;;+3/p-3

| SMILES = [Br-].[Br-].[Br-].[Tb+3]

}}

|Section2={{Chembox Properties

| Formula = TbBr₃

| MolarMass = 398.637 g/mol

| Appearance = white powder (hexahydrate){{cite journal|journal=Journal of the Chemical Society A: Inorganic, Physical, Theoretical|language=en|issn=0022-4944|date=1968|pages=1889–1894|doi=10.1039/j19680001889|url=http://xlink.rsc.org/?DOI=j19680001889|title=The preparation and crystallographic properties of certain lanthanide and actinide tribromides and tribromide hexahydrates|access-date=2020-05-29|author=D. Brown, S. Fletcher, D. G. Holah}}

| Density = 4.62 g/cm³americanelements.com: [http://www.americanelements.com/tbbr.html Terbium Bromide]

| Solubility = soluble

| MeltingPtC = 827{{Sigma-Aldrich|Aldrich|id=466344|Name=Terbium(III) bromide, anhydrous, powder, 99.99% trace metals basis|Datum=2019-08-03}}

| BoilingPtC = 1490

}}

|Section7={{Chembox Hazards

| GHS_ref=

| GHSPictograms = {{GHS07}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|315|319|335}}

| PPhrases = {{P-phrases|261|264|271|280|302+352|304+340|305+351+338|312|321|332+313|337+313|362|403+233|405|501}}

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Terbium(III) bromide (Tb Br₃) is a crystalline chemical compound.{{Cite web|url=https://pubchem.ncbi.nlm.nih.gov/compound/84452|title = Terbium(III) bromide}}

Production and properties

Terbiun(III) bromide can be produced by heating terbium metal or terbium(III) oxide with ammonium bromide.{{cite journal |author=Meyer |first=Gerd |last2=Dötsch |first2=Siegfried |last3=Staffel |first3=Thomas |date=January 1987 |title=The ammonium-bromide route to anhydrous rare earth bromides MBr3 |url=https://linkinghub.elsevier.com/retrieve/pii/0022508887903729 |journal=Journal of the Less Common Metals |language=en |volume=127 |pages=155–160 |doi=10.1016/0022-5088(87)90372-9 |access-date=2020-05-29}}

: 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).{{cite journal|journal=Journal of Inorganic and Nuclear Chemistry|volume=27|issue=9|language=en|date=September 1965|pages=1905–1909|doi=10.1016/0022-1902(65)80042-2|url=https://linkinghub.elsevier.com/retrieve/pii/0022190265800422|title=The thermal decomposition of rare earth and yttrium bromide hydrates|access-date=2020-05-29|author=I. Mayer, S. Zolotov}}

Terbium(III) bromide is a white solid that is soluble in water.CRC Handbook of Chemistry and Physics, 87th Edition, S. 4–94 Its crystal structure is the same as bismuth iodide.{{cite book| author = Jean D'Ans, Ellen Lax | title= Taschenbuch für Chemiker und Physiker | publisher= Springer DE | isbn = 354060035-3 | date= 1997 | page= 1386 }}

References

Category:Bromides

Category:Terbium compounds

Category:Lanthanide halides