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Phosphorus trifluoride

Phosphorus trifluoride
Names IUPAC names
Phosphorus trifluoride
Phosphorus(III) fluoride
Trifluorophosphane
Trifluoridophosphorus
Perfluorophosphane
Other names
Trifluorophosphine
Phosphorous fluoride
TL-75
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard100.029.098
RTECS number
  • TH3850000
UNII
  • InChI=1S/F3P/c1-4(2)3
    Key: WKFBZNUBXWCCHG-UHFFFAOYSA-N
  • InChI=1/F3P/c1-4(2)3
    Key: WKFBZNUBXWCCHG-UHFFFAOYAK
  • FP(F)F
Properties PF3Molar mass87.968971 g/mol Appearance colorless gas Density3.91 g/L, gas Melting point−151.5 °C (−240.7 °F; 121.6 K) Boiling point−101.8 °C (−151.2 °F; 171.3 K) Critical point (T, P) −2.05 °C (28.3 °F; 271.1 K); 42.73 standard atmospheres (4,329.6 kPa; 628.0 psi) slow hydrolysis Structure Trigonal pyramidal1.03 DHazards NFPA 704 (fire diamond)
3
0
1
Flash pointNon-flammable Related compounds
Other anions
Phosphorus trichloride
Phosphorus tribromide
Phosphorus triiodide
Phosphane
Other cations
Nitrogen trifluoride
Arsenic trifluoride
Antimony trifluoride
Bismuth trifluoride
Related ligands
Carbon monoxide
Related compounds
Phosphorus pentafluorideSupplementary data page Phosphorus trifluoride (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Phosphorus trifluoride (formula PF3), is a colorless and odorless gas. It is highly toxic and reacts slowly with water. Its main use is as a ligand in metal complexes. As a ligand, it parallels carbon monoxide in metal carbonyls, and indeed its toxicity is due to its binding with the iron in blood hemoglobin in a similar way to carbon monoxide.

Wikipedia source