查看“︁三溴化镅”︁的源代码

{{Chembox
| ImageFile= Unit_cell_of_PuBr3.png
| ImageFile2 = AmBr3(H2O)n_after_Et2O_wash.jpg
| OtherNames= 溴化镅
|Section3={{Chembox Structure
| CrystalStruct= [[正交晶系]]
| SpaceGroup= Cmcm
|  LattConst_a = 406 pm
|   LattConst_b = 1266 pm
|   LattConst_c = 914 pm
}}
|Section1={{Chembox Identifiers
| CASNo          = 14933-38-1
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo_Comment = 无水
| CASNo2 = 20737-01-3
| CASNo2_Ref = {{cascite|correct|CAS}}
| CASNo2_Comment = 六水
| PubChem        = 
| SMILES = [Br-].[Br-].[Br-].[Am+3]
}}
|Section2={{Chembox Properties
| Appearance= 白色固体（无水）<ref name="Gmelin"/><br>浅棕色固体（六水）<ref>{{cite journal|journal=Journal of the Chemical Society A: Inorganic, Physical, Theoretical|language=en|issn=0022-4944|date=1968|pages=1889|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|accessdate=2021-01-16|author=D. Brown, S. Fletcher, D. G. Holah}}</ref>
| Am=1|Br=3
| Density= 6.79 g·cm<sup>−3</sup><ref name="Gmelin">''[[Gmelins Handbuch der anorganischen Chemie]]'', System Nr.&nbsp;71, Transurane, Teil&nbsp;C, S.&nbsp;149.</ref>
| MeltingPt= 
| BoilingPt= 850～900 °C（真空，升华）<ref name=Fried />
| Solubility=
}} 
|Section8={{Chembox Related
| OtherAnions=[[三氟化镅]]<br>[[三氯化镅]]<br>[[三碘化镅]]
| OtherCations=[[三溴化钚]]
}}
}}

'''三溴化镅'''是[[镅]]的[[溴化物]]，化学式为AmBr<sub>3</sub>。

== 制备==
三溴化镅可以由[[三氯化镅]]和[[溴化铵]]在 400–450&nbsp;°C 的[[氢气]]气氛中反应而成。<ref name=asprey/>

:<chem>AmCl3 + 3 NH4Br -> AmBr3 + 3 NH4Cl</chem>

[[二氧化镅]]和[[溴化铝]]在500 °C反应，也可制得三溴化镅：<ref name=Fried>{{cite journal|journal=Journal of the American Chemical Society|volume=73|issue=1|language=en|issn=0002-7863|date=1951-01|pages=416–418|doi=10.1021/ja01145a135|url=https://pubs.acs.org/doi/abs/10.1021/ja01145a135|title=The Preparation of Anhydrous Americium Compounds|accessdate=2021-01-16|author=Sherman Fried|archive-date=2021-11-21|archive-url=https://web.archive.org/web/20211121013722/https://pubs.acs.org/doi/abs/10.1021/ja01145a135}}</ref>
:<chem>6 AmO2 + 8 AlBr3 -> 6 AmBr3 + 4 Al2O3 + 3 Br2</chem>

== 性质==
三溴化镅是无色的[[离子键|离子化合物]]，由Am<sup>3+</sup>和Br<sup>-</sup>离子组成。 它是[[正交晶系]]，空间群 Cmcm，[[晶格常数]]为 ''a''&nbsp;=&nbsp;406&nbsp;[[皮米|pm]]、 ''b''&nbsp;=&nbsp;1266 和''c''&nbsp;=&nbsp;914&nbsp;pm 。<ref name=asprey>L. B. Asprey, T. K. Keenan, F. H. Kruse: ''Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium'', in: ''[[Inorg. Chem.]]'', '''1965''', ''4''&nbsp;(7), S.&nbsp;985–986 ({{DOI|10.1021/ic50029a013}}).</ref> 其[[晶体结构]]和[[三溴化钚]]一样。

== 参考资料==
<references/>

== 扩展阅读==
* Wolfgang H. Runde, Wallace W. Schulz: [http://radchem.nevada.edu/classes/rdch710/files/Americium.pdf ''Americium''] {{Wayback|url=http://radchem.nevada.edu/classes/rdch710/files/Americium.pdf |date=20100717154306 }}, in: Lester R. Morss, Norman M. Edelstein, Jean Fuger (Hrsg.): ''The Chemistry of the Actinide and Transactinide Elements'', Springer, Dordrecht 2006; ISBN 1-4020-3555-1, S.&nbsp;1265–1395 ({{DOI|10.1007/1-4020-3598-5_8}}).
{{镅化合物}}
{{溴化物}}

[[Category:镅化合物]]
[[Category:溴化物]]
[[Category:金属卤化物]]