From Difluoroamine or Precursors

frequently prepared by hydrolysis of fluorinated urea, may be either readily dispro-portionated in the presence of catalysts according to 

Since NHFg is highly explosive it is desirable to prepare it in situ, that is, to combine the hydrolysis of N, N-difluorourea and the oxidation of NHFg according to 

N2F4 may be obtained besides NF3 from the elements by contacting fluorine with a nitrogen plasma at about 3500°C and quenching the gas stream with liquid nitrogen. The F2iN2 molar ratios were between 0.4 and 1. The main product was NF3 at higher molar ratios [1]. 

The introduction of CF4 or SFq into a nitrogen plasma with subsequent quenching of the gas stream from about 3500 K to room temperature yielded small quantities of N2F4 besides NF3, CF3NF2, C2F6, and trace quantities of N2F2 (cis and trans) and C2F4 [7]. 

In the presence of fluoride ion acceptors like HF, BF3, AIF3, or PF5, the electrolysis of NH4F HF between 4 and 20 V, at 75 to 150°C, using a Ni anode led to the formation of N2F4 besides the main product NF3, plus N2F2, N2, and N-oxides [11]. 

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