Reaction Idea to make Nitryl Fluoride NO2F

[Anders Hoveland]

I had an idea for a reaction to easily produce nitryl fluoride. The reaction has not been tested.

 

(2)CaFeF6 + (22)HNO3 --> (4)Ca[NO3]2 + (4)Fe[NO3]3 + (22)HF + (2)NO2F + O2

Ideally the concentration of the nitric acid used in the reaction should be greater than 98%.

 

 

 

Preparing the hexafluoroferrate

H2O2 + 6HF + FeO4(-2) --> FeF6(-2) + 4H2O + O2

The H2O2 and HF must be premixed, then added to ferrate solution. A similar reaction is known to occurr for permanganate.

After completion of reaction, a solution of calcium nitrate is added, which would cause CaFeF6 to precipitate out. The solution is filtered, and the precipitate is dried.

 

The solution needs to stay alkaline before the CaFeF6 is precipitated out as a solid

The fluoroferrate ion FeF6(-2) is probably only stable in alkaline solution. Addition of acid likely would cause hydrolysis, with the loss of oxygen:

4 FeF6(-2) + 2 H2O + 8 H+(aq) --> 4 FeF3 + 12 HF + O2