Phosphoryl fluoride

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
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R-phrases (outdated) R14, R34, R36/37/38[1]
S-phrases (outdated) (S1/2), S7/9, S26, S36/37/39, S45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[edit]

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[edit]

  1. ^ http://www.chemicalbook.com/ProductChemicalPropertiesCB3329830_EN.htm
  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.