Tetrafluorohydrazine

• Dinitrogen tetrafluoride
• Tetrafluorohydrazine

Colorless gas

Gaseous

4.6 kg · m-3

-164.5 ° C

-73 ° C

2.40 MPa ( 20 ° C)

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Nitrogen (II ) fluoride, and dinitrogen tetrafluoride, a chemical compound of the elements nitrogen and fluorine, with molecular formula N2F4. Here, the nitrogen oxidation state 2. The compound belongs to the group of Stickstoffhalogenide.

Representation

Nitrogen (II ) fluoride can also be synthesized by reduction of nitrogen trifluoride. For this purpose, it is converted into a redox - reaction at elevated temperature with a metal such as copper, to the copper (I ) fluoride is oxidized.

Properties

It is at room temperature to give a colorless gas which condenses at -73 ° C and solidifies at -164.5 ° C.

Two conformers are in equilibrium, the gauche and the trans form. Hydrazine analogous to the trans form, in which the fluorine atoms are on gap energy - in this case about 2 kJ · mol -1 - less. The inversion barrier between the two conformations is 12.5 kJ · mol -1.

The bond length between the nitrogen atoms is 148 pm, the NF bond length 139 pm.

Nitrogen (II ) fluoride is highly reactive and a strong fluorinating agent. The NN single bond is easily cleaved as a result of free radical - I- effects of the fluorine substituents. With combustible materials such as hydrogen may react violently. Hydrolytically, it is less stable than nitrogen trifluoride.

Use

Nitrogen (II ) fluoride oxidized to elemental lithium fluoride and lithium nitride.