查看“︁四氟化铌”︁的源代码

{{Chembox
|   ImageFile=Niobtetrafluorid.png
|   ImageSize=250px
|   Name = 四氟化铌
|   IUPACName = niobium(IV) fluoride
|   IUPACNameZh = 氟化铌(IV)
| Section1 = {{Chembox Identifiers
|  CASNo = 13842-88-1
|  CASNo_Ref = {{cascite|correct|CAS}}
}}
| Section2 = {{Chembox Properties
|   Formula = NbF<sub>4</sub>
|   MolarMass = 168.9 
|   Appearance = 黑色
|   Solubility = 
|   Solvent = 
|   SolubleOther = 
|   MeltingPt = 350 °C（分解）
|   BoilingPt = 
  }}
| Section3 = {{Chembox Structure
| CrystalStruct = tetragonal
| SpaceGroup = 
| PointGroup = I4/mmm
| LattConst_a = 4,0876(5)&nbsp;Å
| LattConst_b = 
| LattConst_c = 8,1351(19)&nbsp;Å<ref>{{Cite journal|author=Jascha Bandemehr, Matthias Conrad, Florian Kraus|title=Redetermination of the crystal structure of NbF<sub>4</sub>|journal=[[Acta Crystallographica]] Section E|volume=E72|year=2016|pages=1211–1213|doi=10.1107/S2056989016012081|doi-access=free}}.</ref>
| UnitCellVolume = 
| UnitCellFormulas = 
| Coordination = [6]Nb
  }}
| Section8 = {{Chembox Related
|   OtherAnions = [[四氯化铌]]<br/>[[四溴化铌]]<br/>[[四碘化铌]]
|   OtherCations = [[四氟化钒]]<br/>[[四氟化钽]]
|   OtherFunctn = [[三氟化铌]]<br/>[[五氟化铌]]
|   Function = 铌氟化物
  }}
}}

'''四氟化铌'''的化学式是NbF<sub>4</sub>，是[[黑色]]的晶体，不挥发，吸湿性很强，在潮湿空气中它水解并完全转化为NbO<sub>2</sub>F。

NbF<sub>4</sub>强烈地和水反应，生成棕色的溶液和组成未确定的棕色沉淀。NbF<sub>4</sub>在真空中加热至275～325℃仍然是稳定的，但当温度高于350℃它会迅速发生[[歧化反应]]，生成[[五氟化铌]]和[[三氟化铌]]：<ref>{{Cite book | author = 张青莲 | title = 无机化学丛书 | location = 北京 | publisher = 科学出版社 | date = 1981–1998 | pages = P323 |ISBN = 7-03-002238-6}}</ref>

:<math>\mathrm{\ 2 NbF_4 \rightarrow NbF_5 + NbF_3}</math>

== 參考資料 ==
{{reflist}}

{{铌化合物}}

[[Category:铌化合物]]
[[Category:氟化物]]
[[Category:卤化铌]]