Phosphoryl fluoride
{{chembox
| Watchedfields = changed
| verifiedrevid =
| Name = Phosphoryl fluoride
| ImageFileL1 = Phosphoryl fluoride.svg
| ImageFileR1 = Phosphoryl-fluoride-3D-vdW.png
| IUPACName = Phosphoryl trifluoride
Phosphorus trifluoride oxide
| OtherNames = {{ubl|Phosphorus oxyfluoride|Phosphorus oxide trifluoride|Phosphorus(V) oxide trifluoride|Trifluorophosphine oxide|Trifluorophosphine P-oxide}}
|Section1={{Chembox Identifiers
| EINECS = 236-776-4
| CASNo = 13478-20-1
| PubChem = 83516
| ChemSpiderID = 75351
| UNII = J2907TX5WS
| SMILES = F[P+](F)(F)[O-]
| SMILES1 = FP(F)(F)=O
| InChI = 1/F3OP/c1-5(2,3)4
| InChIKey = FFUQCRZBKUBHQT-UHFFFAOYAJ
| StdInChI = 1S/F3OP/c1-5(2,3)4
| StdInChIKey = FFUQCRZBKUBHQT-UHFFFAOYSA-N
}}
|Section2={{Chembox Properties
| Formula = {{chem2|POF3}}
| MolarMass = 103.9684 g/mol
| Appearance = Colourless gas
| Density =
| Solubility = Reacts
| SolubleOther = Reacts with alcohol and acid, soluble in diethyl ether and hydrocarbons
| BoilingPtC = -39.7
| Viscosity =
| Dipole = 1.76 D{{cite web | url=https://www.stenutz.eu/chem/solv6.php?name=phosphoryl+fluoride | title=Phosphoryl fluoride }}
}}
|Section3={{Chembox Structure
| MolShape = Tetrahedral at the P atom
}}
|Section7={{Chembox Hazards
| ExternalSDS = [http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/_icsc01/icsc0190.htm ICSC 0190]
| GHSPictograms = {{GHS05}}{{GHS06}}{{GHS07}}{{GHS08}}
| GHSSignalWord = Danger
| HPhrases = {{H-phrases|302|314|330|372}}
| PPhrases = {{P-phrases|260|264|270|271|280|284|301+312|301+330+331|303+361+353|304+340|305+351+338|310|314|320|321|330|363|403+233|405|501}}
| MainHazards = Poison, corrosive, can form HF on contact with {{chem2|H2O}}
| NFPA-H = 3
| NFPA-F = 0
| NFPA-R = 2
| NFPA-S =
}}
|Section8={{Chembox Related
| OtherCompounds = {{ubl|Phosphoryl chloride|Phosphoryl chloride difluoride|Phosphoryl bromide|Thiophosphoryl fluoride|Thiophosphoryl chloride|Thiophosphoryl chloride difluoride|Phosphorus trifluoride|Phosphorus pentafluoride}}
}}
}}
Phosphoryl fluoride (commonly called phosphorus oxyfluoride) is a compound with the chemical formula {{chem2|POF3|auto=1}}. 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:
:{{chem2|POF3 + H2O → HPO2F2 + HF}}
The next steps give monofluorophosphoric acid and phosphoric acid:
:{{chem2|HPO2F2 + H2O → H2PO3F + HF}}
:{{chem2|H2PO3F + H2O → H3PO4 + HF}}
Phosphoryl fluoride combines with dimethylamine to produce dimethylaminophosphoryl difluoride {{chem2|(H3C\s)2N\sP(\dO)F2}} and difluorophosphate and hexafluorophosphate ions.{{cite journal|last=Cavell|first=R. G.|year=1968|title=Chemistry of phosphorus fluorides. Part III. The reaction of thiophosphoryl-fluoride with dimethylamine and some properties of the dimethylaminothio- phosphoryl fluorides|journal=Canadian Journal of Chemistry|volume=46|issue=4|page=613|doi=10.1139/v68-100|doi-access=free}}
References
{{fluorine compounds}}
{{commonscat|Phosphoryl fluoride}}
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