Nitrosyl fluoride

Nitrosyl fluoride
IUPAC name Nitrosyl fluoride
Other names NOF Nitrogen oxyfluoride
Identifiers
CAS number	7789-25-5
PubChem	123261
ChemSpider	109874 Y
Jmol-3D images	Image 1
SMILES FN=O
InChI InChI=1S/FNO/c1-2-3 Y Key: ZEIYBPGWHWECHV-UHFFFAOYSA-N Y InChI=1/FNO/c1-2-3 Key: ZEIYBPGWHWECHV-UHFFFAOYAP
Properties
Molecular formula	NOF
Molar mass	49.0045 g/mol
Appearance	colourless gas bluish with impurities
Density	1.719 g/cm3 (solid) 1.326 g/mL (liquid) 2.657 g/L (gas)
Melting point	-166°C (107.15 K)
Boiling point	-72.4°C (200.75 K)
Solubility in water	Reacts.
Related compounds
Other anions	nitrosyl chloride nitrosyl bromide
Other cations	nitryl fluoride, thionyl fluoride
Y fluoride (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Nitrosyl fluoride, NOF, is a covalently bonded nitrosyl compound.

Reactions

NOF is a highly reactive fluorinating agent that converts many metals to their fluorides, releasing nitric oxide:

n NOF + M → MF_n + n NO

NOF also fluorinates fluorides to form adducts that have a salt-like character, such as NOBF₄.

Aqueous solutions of NOF are powerful solvents for metals, by a mechanism similar to that seen in aqua regia. Nitrosyl fluoride reacts with water to form nitrous acid, which then forms nitric acid:

NOF + H₂O → HNO₂ + HF

3 HNO₂ → HNO₃ + 2 NO + H₂O

Nitrosyl fluoride can also convert alcohols to nitrites:

ROH + NOF → RONO + HF

Uses

Nitrosyl fluoride is used as a solvent^{[citation needed]} and as a fluorinating and nitrating agent in organic synthesis.^{[citation needed]} It is also used as an oxidizer in rocket propellants.

References

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. ISBN 0080379419. 

External links

• WebBook page for NOF
• National Pollutant Inventory - Fluoride and compounds fact sheet