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Phosphoryl fluoride

Phosphoryl fluoride
Phosphoryl fluoride.svg
Phosphoryl-fluoride-3D-vdW.png
Names
IUPAC names
Phosphoryl trifluoride
Phosphorus trifluoride oxide
Other names
Phosphorus oxyfluoride
Phosphoric trifluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.419
EC Number
  • 236-776-4
UNII
Properties
POF3
Molar mass 103.9684 g/mol
Appearance Clear, colourless gas
Boiling point −39.7 °C (−39.5 °F; 233.5 K)
Reacts
Solubility Reacts with alcohol and acid
soluble in ether and hydrocarbons
Structure
tetrahedral
D
Hazards
Main hazards Poison, corrosive, can form HF on contact with H2O
Safety data sheet ICSC 0190
Corrosive C
R-phrases (outdated) R14, R34, R36/37/38[1]
S-phrases (outdated) (S1/2), S7/9, S26, S36/37/39, S45
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
3
2
Related compounds
Related compounds
Thiophosphoryl fluoride
Phosphoryl chloride
Phosphorus oxybromide
Phosphorus trifluoride
Phosphorus pentafluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Phosphoryl fluoride (commonly called phosphorus oxyfluoride) is a compound with the chemical formula POF3. It is a colorless gas that hydrolyzes rapidly.

Synthesis and reactions

Phosphorus oxyfluoride is prepared by partial hydrolysis of phosphorus pentafluoride.

Phosphorus oxyfluoride is the progenitor of the simple fluorophosphoric acids by hydrolysis. The sequence starts with difluorophosphoric acid:

POF3 + H2O → HPO2F2 + HF

The next steps give monofluorophosphoric acid and phosphoric acid:

HPO2F2 + H2O → H2PO3F + HF
HPO3F + H2O → H3PO4 + HF

Phosphoryl fluoride combines with dimethylamine to produce dimethylaminophosphoryldifluoride (CH3)2NPOF2 and difluorophosphate and hexafluorophosphate ions.[2]

References

  1. ^ [www.chemicalbook.com]
  2. ^ Cavell, R. G. (1968). "Chemistry of phosphorus fluorides. Part III. The reaction of thiophosphoryl-fluoride with dimethylamine and some properties of the dimethylaminothio- phosphoryl fluorides". Canadian Journal of Chemistry. 46 (4): 613. doi:10.1139/v68-100. Retrieved 2 Feb 2012.