Hexafluorophosphazene

Hexafluorophosphazene
Names
IUPAC name
2,2,4,4,6,6-Hexafluoro-1,3,5,2λ5,4λ5,6λ5-triazatriphosphinine
Other names
  • Phosphonitrilic fluoride trimer
  • Hexafluorotriphosphazene
  • Hexafluorocyclotriphosphazene
  • Triphosphonitrilic fluoride
  • 2,2,4,4,6,6-Hexafluoro-2,2,4,4,6,6-hexahydro-1,3,5,2,4,6-triazatriphosphorine
Identifiers
3D model (JSmol)
  • Interactive image
ECHA InfoCard 100.150.019 Edit this at Wikidata
CompTox Dashboard (EPA)
  • DTXSID40166013 Edit this at Wikidata
InChI
  • InChI=1S/F6N3P3/c1-10(2)7-11(3,4)9-12(5,6)8-10
  • InChI=1/F6N3P3/c1-10(2)7-11(3,4)9-12(5,6)8-10
  • N1=P(N=P(N=P1(F)F)(F)F)(F)F
Properties
Chemical formula
 (NPF2)3
Molar mass 248.933 g·mol−1
Appearance White powder or lumps[1]
Melting point 27 °C (81 °F; 300 K)
Boiling point 51 °C (124 °F; 324 K)
Solubility in water
 decomposes
Solubility Toluene[1]
Structure
Molecular shape
 Planar P3N3 ring
Dipole moment
 0 D
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Corrosive
GHS labelling:
Pictograms
 GHS05: Corrosive
Danger
Hazard statements
 H314
Precautionary statements
 P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340+P310, P305+P351+P338+P310, P363, P405, P501
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound

Hexafluorophosphazene is an inorganic compound with the formula (NPF2)3. It takes the form of a white powder or lumps. It is sensitive to moisture and heat.[1]

Structure

The molecule has a cyclic, unsaturated P3N3 backbone consisting of alternating phosphorus and nitrogen atoms, and can be viewed as a trimer of the hypothetical compound N≡PF2 (phosphazyl difluoride). Its classification as a phosphazene highlights its relationship to benzene. Hexafluorophosphazene has a hexagonal P3N3 ring with six equivalent P–N bonds. Each phosphorus atom is additionally bonded to two fluorine atoms.[2]

The molecule possesses D3h symmetry, and each phosphorus center is tetrahedral.

The P3N3 ring in hexachlorophosphazene deviates from planarity and is slightly ruffled (see chair conformation). By contrast, the P3N3 ring in hexafluorophosphazene is completely planar.[3]

References

  1. ^ a b c "Hexafluorocyclotriphosphazene 15599-91-4 | TCI AMERICA". www.tcichemicals.com.
  2. ^ Allen, Christopher W. (1991-03-01). "Regio- and stereochemical control in substitution reactions of cyclophosphazenes". Chemical Reviews. 91 (2): 119–135. doi:10.1021/cr00002a002. ISSN 0009-2665.
  3. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.


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