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Dinitrogen difluoride

Dinitrogen difluoride
Names IUPAC name
cis- or trans-dinitrogen difluoride
Other names
cis- or trans-difluorodiazene
Identifiers
3D model (JSmol)
ChemSpider
  • (cis): InChI=1S/F2N2/c1-3-4-2/b4-3-
    Key: DUQAODNTUBJRGF-ONEGZZNKBY
  • (trans): InChI=1/F2N2/c1-3-4-2/b4-3+
    Key: DUQAODNTUBJRGF-ONEGZZNKBY
  • InChI=1S/F2N2/c1-3-4-2/b4-3+
    Key: DUQAODNTUBJRGF-ARJAWSKDSA-N
  • (cis): F\N=N\F
  • (trans): F\N=N/F
Properties FN=NF Molar mass66.011 g·mol Appearance Colorless gas Density2.698 g/L Melting pointcis: less than −195 °C (−319.0 °F; 78.1 K)
trans: −172 °C (−278 °F) Boiling pointcis: −105.75 °C (−158.35 °F; 167.40 K)
trans: −111.45 °C (−168.61 °F) cis: 0.16 D
trans: 0 D Thermochemistry cis: 69.5 kJ/mol
trans: 82.0 kJ/mol Related compounds
Other anions
Azide
Other cations
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Dinitrogen difluoride is a chemical compound with the formula N2F2. It is a gas at room temperature, and was first identified in 1952 as the thermal decomposition product of the fluorine azide (FN3). It has the structure F−N=N−F and exists in both cis and trans isomers, as typical for diimides.

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