查看“︁六氟合镍(IV)酸钾”︁的源代码

{{Chembox
| ImageFile = K2NiF6.svg
| ImageSize = 
| IUPACName = Potassium hexafluoronickelate
| OtherNames = 
| Section1 = {{Chembox Identifiers
|  CASNo = 17218-47-2
|   CASNo_Ref = {{cascite|correct|CAS}}
|  PubChem = 
|  ChemSpiderID = 21241633
|  SMILES = [K+].[K+].F[Ni-2](F)(F)(F)(F)F
|  InChI = InChI=1S/6FH.2K.Ni/h6*1H;;;/q;;;;;;2*+1;+4/p-6
  }}
| Section2 = {{Chembox Properties
|  Formula = K<sub>2</sub>NiF<sub>6</sub>
|  MolarMass = 250.880
|  Appearance = 
|  Density = 
|  MeltingPt = 
|  BoilingPt = 
|  Solubility =
  }}
|Section3={{Chembox Hazards
| Reference = <ref name=sds>{{cite web|title = Potassium Hexafluoronickelate(IV)|url = https://www.americanelements.com/potassium-hexafluoronickelate-iv-17218-47-2|publisher = [[American Elements]]|accessdate = December 19, 2018|archive-date = 2020-09-28|archive-url = https://web.archive.org/web/20200928022459/https://www.americanelements.com/potassium-hexafluoronickelate-iv-17218-47-2}}</ref>
| ExternalSDS = [https://www.americanelements.com/printpdf/potassium-hexafluoronickelate-iv-17218-47-2/sds External SDS]
| GHSPictograms = {{GHS06}}{{GHS07}}{{GHS08}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|302|312|317|331|350}}
| PPhrases = {{P-phrases|201|261|280|304+340|405|501}}
| MainHazards = 
| FlashPt = 
| AutoignitionPt =
  }}
}}
'''六氟合镍(IV)酸钾'''是一种镍的配合物，化学式为{{chem|K|2|NiF|6}}。它可由氟气氟化[[氯化钾]]和[[二氯化镍]]的混合物（2：1）制得。六氟合镍(IV)酸钾易与水反应，并放出[[氧]]气。但可溶于无水[[氟化氢]]生成亮红色溶液。在350℃以上真空加热分解<ref>{{cite book|title=《无机化学丛书》第九卷：锰分族、铁系、铂系|pages=P333|author=张青莲|isbn=7-03-002238-6|location=北京|publisher=科学出版社}}</ref>：
:<math>\rm \ 3K_2NiF_6 \xrightarrow{\Delta} 2K_3NiF_6 + NiF_2 + F_2</math>

六氟合镍(IV)酸钾是强氧化剂，可用它氧化[[五氟化氯]]和[[五氟化溴]]，生成{{chem|ClF|6|+}}和{{chem|BrF|6|+}}，这一点只有[[二氟化氪]]也能做到<ref>{{cite journal|doi=10.1021/ic001024|title=Novel Synthesis of ClF<sub>6</sub><sup>+</sup> and BrF<sub>6</sub><sup>+</sup> Salts|year=2001|last1=Schroer|first1=Thorsten|last2=Christe|first2=Karl O.|journal=Inorganic Chemistry|volume=40|issue=10|pages=2415–9|pmid=11327921}}</ref>。
:<math>\rm \ K_2NiF_6 + 5AsF_5 + XF_5 \xrightarrow{aHF} XF_6AsF_6 + Ni(AsF_6)_2 + 2KAsF_6</math>
:（X为Cl或Br，无水氟化氢，-60℃）

== 参考资料 ==
{{reflist}}

[[Category:钾化合物]]
[[Category:镍配合物]]
[[Category:氟代酸盐]]
[[Category:四价镍化合物]]


{{无机化合物小作品}}