Phosphoryl fluoride (commonly called phosphorus oxyfluoride) is a compound with the chemical formula POF3. It is a colorless gas that hydrolyzes rapidly. It has a critical temperature of 73 °C and a critical pressure of 4.25 bars.
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 + HFThe next steps give monofluorophosphoric acid and phosphoric acid:
HPO2F2 + H2O → H2PO3F + HF H2PO3F + H2O → H3PO4 + HFPhosphoryl fluoride combines with dimethylamine to produce dimethylaminophosphoryl difluoride (H3C−)2N−P(=O)F2 and difluorophosphate and hexafluorophosphate ions.2
Wikimedia Commons has media related to Phosphoryl fluoride.References
"Phosphoryl fluoride". https://www.stenutz.eu/chem/solv6.php?name=phosphoryl+fluoride ↩
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. https://doi.org/10.1139%2Fv68-100 ↩