Potassium hexafluoronickelate(IV)

From Wikipedia, the free encyclopedia
  (Redirected from Dipotassium hexafluoronickel)
Jump to: navigation, search
Potassium hexafluoronickelate(IV)
Mg2FeH6 from X-ray.jpg
Names
IUPAC name
potassium hexafluoronickelate(IV)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.153.655
Properties
K2NiF6
Molar mass 250.880
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Potassium hexafluoronickelate(IV) is an inorganic compound with the chemical formula 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:[1][better source needed]

Potassium hexafluoronickelate is a strong oxidant. It can turn chlorine pentafluoride and bromine pentafluoride into ClF+
6
and BrF+
6
, respectively:[2]

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

It adopts the structure seen for K2PtCl6.[3]

References[edit]

  1. ^ (in simplified Chinese)张青莲. 《无机化学丛书》第九卷:锰分族、铁系、铂系. 北京: 科学出版社. pp. P333. ISBN 7-03-002238-6. 
  2. ^ Schroer, Thorsten; Christe, Karl O. (2001). "Novel Synthesis of ClF6+ and BrF6+ Salts". Inorganic Chemistry. 40 (10): 2415–9. doi:10.1021/ic001024. PMID 11327921. 
  3. ^ 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.