查看“︁六溴化钨”︁的源代码

{{Chembox
| ImageFile    = Unit cell of WBr6.png
| OtherNames     = 溴化钨(VI)
| Section1 ={{Chembox Identifiers 
| CASNo             = 13701-86-5
| CASNo_Ref = {{cascite|correct|CAS}}
| PubChem          = 14440251
| ChemSpider       = 
| SMILES = Br[W](Br)(Br)(Br)(Br)Br
}}
| Section2 ={{Chembox Properties 
|W=1|Br=6
| Appearance= 深灰色固体<ref name="brauer" />
| Density= 6.9 g·cm<sup>−3</sup><ref name="Dale L. Perry">{{cite book | last=Perry | first=Dale L. | title=Handbook of Inorganic Compounds | publication-place=Boca Raton, FL | date=2011 | isbn=978-1-4398-1462-8 | oclc=759865801|page=441}}</ref>
| MeltingPt= 232°C<ref name="Dale L. Perry" />
}}
| Section3 = {{Chembox Structure
|  Reference = 
|  CrystalStruct =  [[三方晶系]]
|  SpaceGroup = <math>R\bar{3}</math> (No. 148)
|  Coordination = 
|  LattConst_a = 639.4 pm
|   LattConst_b = 
|   LattConst_c = 1753 pm<ref name="Willing">{{cite journal | last=Willing | first=W. | last2=Müller | first2=U. | title=Wolframhexabromid | journal=Acta Crystallographica Section C Crystal Structure Communications | publisher=International Union of Crystallography (IUCr) | volume=43 | issue=7 | date=1987-07-15 | issn=0108-2701 | doi=10.1107/s0108270187091625 | pages=1425–1426}}</ref>
|  LattConst_alpha = 
|   LattConst_beta = 
|   LattConst_gamma = 
|  Dipole =  }}
|Section8 = {{Chembox Related
| OtherAnions = [[六氟化钨]]<br />[[六氯化钨]]
| OtherCpds = {{link-de|四溴化钨|Wolfram(IV)-bromid}}<br />[[五溴化钨]]
}}
}}

'''六溴化钨'''是[[钨]]的一种[[溴化物]]，[[化学式]] WBr<sub>6</sub>。

== 制备 ==
六溴化钨可以通过在没有[[氧气]]的保护气氛中使[[五溴化钨]]与[[溴]]反应而成。<ref name="brauer">{{cite book | author=hrsg. von Georg Brauer. Unter Mitarb. von M. Baudler | title=Handbuch der präparativen anorganischen Chemie / 3. | publisher=Enke | publication-place=Stuttgart | date=1981 | isbn=3-432-87823-0 | oclc=310719495 | language=de|page=1561}}</ref>
:<chem>2WBr5 + Br2 -> 2WBr6</chem>

六溴化钨也可以通过使[[六羰基钨]]与溴反应或通过[[六氯化钨]]与[[三溴化硼]]化合而成。<ref name="brauer" />
:<chem>W(CO)6 + 3Br2 -> WBr6 + 6CO</chem>

== 性质 ==
六溴化钨是非常容易[[水解]]的深灰色粉末或带有金属光泽的浅灰色固体。在室温下，它会与干燥的氧气缓慢反应，释放出溴。在高于200°C下，它会迅速分解为五溴化钨和溴。<ref name="brauer" />它的结构属[[三方晶系]]，空间群<math>R\bar{3}</math>，由WBr<sub>6</sub>[[八面体]]组成。<ref name="Willing" />

它和[[叠氮化碘|IN<sub>3</sub>]]反应，生成WNBr<sub>3</sub>。<ref>Ruschke, Peter; Dehnicke, Kurt. Nitridobromo complexes of tungsten(VI). ''Zeitschrift fuer Naturforschung, Teil B:  Anorganische Chemie, Organische Chemie'', 1980. 35B (12): 1589-1591. ISSN: 0340-5087.</ref>它和[[一氧化氮|NO]]在[[二溴甲烷|CH<sub>2</sub>Br<sub>2</sub>]]中反应，可以得到[WBr<sub>2</sub>(NO)<sub>3</sub>]<sub>2</sub>。<ref>Berg, Alexander; Dehnicke, Kurt. Dibromotrinitrosyltungsten, [WBr2(NO)3]2. ''Zeitschrift fuer Naturforschung, Teil B:  Anorganische Chemie, Organische Chemie'', 1985. 40B (6): 842-844. ISSN: 0340-5087.</ref>它加热时可以被[[红磷]]还原，经黑色的WBr<sub>5</sub>、暗棕色的WBr<sub>4</sub>、暗绿色的W<sub>4</sub>(PBr)Br<sub>10</sub>，最终得到黑色的W<sub>6</sub>Br<sub>12</sub>。<ref>{{cite journal|journal=Inorganic Chemistry|volume=54|issue=3|language=en|issn=0020-1669|date=2015-02-02|pages=989–992|doi=10.1021/ic502333u|url=https://pubs.acs.org/doi/10.1021/ic502333u|title=Cluster Harvesting in the WBr 6 –P System|accessdate=2020-11-27|author=Markus Ströbele, Klaus Eichele, Hans-Jürgen Meyer|archive-date=2022-04-25|archive-url=https://web.archive.org/web/20220425110321/https://pubs.acs.org/doi/10.1021/ic502333u}}</ref>
:6 WBr<sub>6</sub> + 8 P → W<sub>6</sub>Br<sub>12</sub> + 8 PBr<sub>3</sub>

== 参考资料 ==
{{reflist}}
{{钨化合物}}
{{溴化物}}

[[Category:卤化钨]]
[[Category:溴化物]]