Fluorinating agents krypton difluoride

Krypton difluoride is a fluorinating agent some 50 kJ/mol more powerful than fluorine itself. It forms adducts, salts of FKr+, with high valency fluorides such as AsF5 and SbF5, these react explosively with organic compounds. 

Very few are known, all may be seen as derived from FKr+. All are thermodynamically unstable and energetic fluorinating agents. Listed are Fluorohydrocyanokrypton hexafluoroarsenate, 0367 Fluorokrypton hexafluoroarsenate, 0096 Krypton difluoride, 4313 See also xenon compounds... 

Krypton difluoride is a white crystalline solid with a vapor pressure of about 40 mbar at 0°C. It is thermally unstable and decomposes slowly at room temperature. Therefore, it should be stored preferably in nickel or Monel containers held at low temperature (below — 60°C). Krypton difluoride is stronger oxidizing agent than elemental fluorine, dioxygen difluoride, or xenon hexafluoride. 

As mentioned, krypton difluoride is an exceedingly powerful oxidizing and fluorinating agent, far more potent than Xep2. Thus, it oxidizes xenon to XeF and gold to the unique Au(V) compound KrF+AuFg" ... 

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