“Potassium hexafluoronickelate(IV)”的意思、由来-开放百科全书

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Potassium hexafluoronickelate(IV)

释义

References

{{Chembox
| ImageFile = Mg2FeH6 from X-ray.jpg
| ImageSize =
| IUPACName = potassium hexafluoronickelate(IV)
| OtherNames =
|Section1={{Chembox Identifiers
| CASNo = 17218-47-2
| CASNo_Ref = {{cascite|correct|scifinder}}
| 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 = K₂NiF₆
| MolarMass = 250.880
| Appearance =
| Density =
| MeltingPt =
| BoilingPt =
| Solubility =
|Section3={{Chembox Hazards
| ExternalSDS = [https://www.americanelements.com/printpdf/potassium-hexafluoronickelate-iv-17218-47-2/sds External SDS]
| GHSPictograms = {{GHS06}}{{GHS07}}{{GHS08}}^[1]
| GHSSignalWord = Danger^[1]
| HPhrases = {{H-phrases|302|312|317|331|350}}^[1]
| PPhrases = {{P-phrases|201|261|280|304+340|405|501}}^[1]
| MainHazards =
| FlashPt =
| AutoignitionPt =
}}

Potassium hexafluoronickelate(IV) is an inorganic compound with the chemical formula {{chem|K|2|NiF|6}}. It can be produced through the reaction of potassium fluoride, nickel dichloride, and fluorine.

It reacts violently with water, releasing oxygen. It dissolves in anhydrous hydrogen fluoride to produce a light-red solution. Potassium hexafluoronickelate(IV) decomposes at 350 °C, forming potassium hexafluoronickelate(III), nickel(II) fluoride, and fluorine:^[2]{{better source|date=December 2013}}

Potassium hexafluoronickelate is a strong oxidant. It can turn chlorine pentafluoride and bromine pentafluoride into {{chem|ClF|6|+}} and {{chem|BrF|6|+}}, respectively:^[3]

( X = Cl or Br , -60 °C , aHF = anhydrous hydrogen fluoride).

It adopts the structure seen for K₂PtCl₆.^[4]

References

1. ^¹²³{{cite web|title = Potassium Hexafluoronickelate(IV)|url =https://www.americanelements.com/potassium-hexafluoronickelate-iv-17218-47-2|publisher = American Elements|accessdate = December 19, 2018}}
2. ^{{zh-hans}}{{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}}
3. ^{{cite journal|doi=10.1021/ic001024|title=Novel Synthesis of ClF₆⁺ and BrF₆⁺ Salts|year=2001|last1=Schroer|first1=Thorsten|last2=Christe|first2=Karl O.|journal=Inorganic Chemistry|volume=40|issue=10|pages=2415–9|pmid=11327921}}
4. ^Taylor, J. C. "A comparison of profile decomposition and Rietveld methods for structurtal refinement with powder diffraction data" Zeitschrift für Kristallographie 1987, volume 181, p151-160.

3 : Potassium compounds|Nickel complexes|Fluorides

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