Phosphoryl dichloride fluoride

Phosphoryl dichloride flouride is an inorganic compound with the chemical formula POFCl₂.

Phosphoryl dichloride fluoride

Names
Other names Phosphorus oxydichlorofluoride, TL-191, Phosphoryl dichlorofluoride
Identifiers
CAS Number	13769-76-1 Y
3D model (JSmol)	Interactive image
ChemSpider	109931
PubChem CID	123328
CompTox Dashboard (EPA)	DTXSID30929871
InChI InChI=1S/Cl2FOP/c1-5(2,3)4 Key: YNECJZSONMVFHE-UHFFFAOYSA-N
SMILES O=P(F)(Cl)Cl
Properties
Chemical formula	Cl2FOP
Molar mass	136.87 g·mol−1
Boiling point	52 °C[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

It is made by reacting phosphorus pentachloride with potassium monofluorophosphate:^[2]

K₂PO₃F + 2PCl₅ → POFCl₂ + 2POCl₃ + 2KCl

Reactions

The reaction with two equivalents of cyclohexanol yields the nerve agent dicyclohexyl phosphorofluoridate.^[3][4]

The same reaction with isopropanol instead of cyclohexanol yields the nerve agent diisopropyl fluorophosphate.^[5]

Two equivalents of sodium azide can replace the chlorine atoms with azide groups. Silver cyanate can replace them with cyanate groups.^[6] Hexamethyldisiloxane can replace one of the two chlorine atoms with a trimethylsilyl ether.^[7]