Phosphoryl fluoride

Phosphoryl fluoride
Names
	IUPAC names Phosphoryl trifluoride; Phosphorus trifluoride oxide
	Other names Phosphorus oxyfluoride; Phosphorus oxide trifluoride; Phosphorus(V) oxide trifluoride; Trifluorophosphine oxide; Trifluorophosphine P-oxide;
Identifiers
CAS Number	13478-20-1;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	75351;
ECHA InfoCard	100.033.419
EC Number	236-776-4;
PubChem CID	83516;
UNII	J2907TX5WS;
CompTox Dashboard (EPA)	DTXSID1065504 ;
	InChI InChI=1S/F3OP/c1-5(2,3)4 Key: FFUQCRZBKUBHQT-UHFFFAOYSA-N; InChI=1/F3OP/c1-5(2,3)4 Key: FFUQCRZBKUBHQT-UHFFFAOYAJ;
	SMILES F[P+](F)(F)[O-]; FP(F)(F)=O;
Properties
Chemical formula	POF3
Molar mass	103.9684 g/mol
Appearance	Colourless gas
Boiling point	−39.7 °C (−39.5 °F; 233.5 K)
Solubility in water	Reacts
Solubility	Reacts with alcohol and acid, soluble in diethyl ether and hydrocarbons
Dipole moment	1.76 D
Structure
Molecular shape	Tetrahedral at the P atom
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Poison, corrosive, can form HF on contact with H2O
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H314, H330, H372
Precautionary statements	P260, P264, P270, P271, P280, P284, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P314, P320, P321, P330, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 2
Safety data sheet (SDS)	ICSC 0190
Related compounds
Related compounds	Phosphoryl chloride; Phosphoryl chloride difluoride; Phosphoryl bromide; Thiophosphoryl fluoride; Thiophosphoryl chloride; Thiophosphoryl chloride difluoride; 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 P O F₃. It is a colorless gas that hydrolyzes rapidly. It has a critical temperature of 73 °C and a critical pressure of 4.25 bars.^[1]

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

H₂PO₃F + H₂O → H₃PO₄ + HF

Phosphoryl fluoride combines with dimethylamine to produce dimethylaminophosphoryl difluoride (H₃C−)₂N−P(=O)F₂ and difluorophosphate and hexafluorophosphate ions.^[2]

References[edit]

^ ^a ^b "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.

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[stenutz-1] "Phosphoryl fluoride".

[Cavell-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.

[1]

[2]