Nitrogen monofluoride

Nitrogen monofluoride (fluoroimidogen) is a metastable species that has been observed in laser studies. It is isoelectronic with O2. Like boron monofluoride, it is an instance of the rare multiply-bonded fluorine atom.[1][2] It is unstable with respect to its formal dimer, dinitrogen difluoride, as well as to its elements, nitrogen and fluorine.

Nitrogen monofluoride
Names
Other names
Fluoroimidogen
Identifiers
3D model (JSmol)
  • InChI=1S/FN/c1-2
    Key: CMUBZTZNXGBJMQ-UHFFFAOYSA-N
  • [F+]=[N-]
Properties
FN
Molar mass 33.005 g·mol−1
Related compounds
Dioxygen, nitroxyl anion
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Nitrogen monofluoride is produced when radical species (H, O, N, CH3) abstracts a fluorine atom from nitrogen difluoride (NF2). Stoichiometrically, the reaction is extremely efficient, regenerating a radical for long-lasting chain propagation. However, radical impurities in the end product also catalyze that product's decomposition. Azide decomposition offers a less-efficient but more pure technique: fluorine azide (which can be formed in situ via reaction of atomic fluorine with hydrazoic acid) decomposes upon shock into NF and N2.[3][4]

Many NF-producing reactions give the product in an excited state with characteristic chemiluminescence. They have thus been investigated for development as a chemical laser.[4][5]

References
  1. Davis, Steven J.; Rawlins, Wilson T.; Piper, Lawrence G. (Feb 1989). "Rate coefficient for the H + NF(a1Δ) reaction" (PDF). The Journal of Physical Chemistry. American Chemical Society. 93 (3): 1078–1082. doi:10.1021/j100340a013. ISSN 0022-3654 – via MetastableStates.com.
  2. Harbison, G. S. (2002). "The Electric Dipole Polarity of the Ground and Low-lying Metastable Excited States of NF". Journal of the American Chemical Society. 124 (3): 366–367. doi:10.1021/ja0159261. PMID 11792193.
  3. Gmelin-lnstitut für Anorganische Chemie der Max-Planck-Gesellschaft zur Förderung der Wissenschaften (2013). Gmelin Handbook of Inorganic Chemistry: F Fluorine: Compounds with Oxygen and Nitrogen. Springer Science & Business Media. pp. 263–271. ISBN 9783662063392.
  4. Avizonis, Petras V. (2012). "Chemically Pumped Electronic Transition Lasers". In Onorato, Michele (ed.). Gas Flow and Chemical Lasers. Plenum Press. pp. 1–19. doi:10.1007/978-1-4615-7067-7_1. ISBN 978-1-4615-7067-7.
  5. Kenner, Rex D.; Ogryzlo, Elmer A. (1985). "Chemiluminescence in Gas Phase Reactions; 4. NF(a1Δ) (870, 875 nm) and (b1Σ+) (525–530 nm)". In Burr, John G. (ed.). Chemi- and Bioluminescence. Chemical and Biochemical Analysis. Vol. 16. Dekker. pp. 84–87. ISBN 0-8247-7277-6.
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