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Phosphorus pentafluoride

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Identification
Molecular formula
PF5
CAS number
7647-19-0
IUPAC name
pentafluoro-lambda5-phosphane
State
State

At room temperature, phosphorus pentafluoride is a gas. It is quite volatile and transitions to liquid upon cooling.

Melting point (Celsius)
-93.80
Melting point (Kelvin)
179.40
Boiling point (Celsius)
-84.50
Boiling point (Kelvin)
188.70
General information
Molecular weight
125.97g/mol
Molar mass
125.9650g/mol
Density
3.9320g/cm3
Appearence

Phosphorus pentafluoride is a colorless, odorless gas. In the gaseous state, it forms a monomer, while in the solid phase, it typically exists as a polymeric chain structure. It is known to fume in moist air due to its reaction with water vapor, forming hydrofluoric acid and phosphoric acid.

Comment on solubility

Solubility of Pentafluoro-lambda5-phosphane

Pentafluoro-lambda5-phosphane, a unique organophosphorus compound, exhibits intriguing solubility characteristics due to its distinct molecular structure. The presence of five fluorine atoms creates a highly electronegative environment, impacting its interactions with solvents.

Solubility Profile:

  • Polar Solvents: Pentafluoro-lambda5-phosphane is generally less soluble in polar solvents like water due to the strong hydrogen bonding interactions that fluorinated compounds usually exhibit.
  • Non-Polar Solvents: It demonstrates a greater solubility in non-polar organic solvents such as hexane and benzene, where dispersion forces play a significant role.
  • Solvent Compatibility: The solubility can vary dramatically depending on the solvent's characteristics. As a rule of thumb, "like dissolves like," which is particularly relevant when evaluating its compatibility.

In summary, the solubility of pentafluoro-lambda5-phosphane is influenced by the solvent environment, making it critical to consider both the solvent type and its molecular interactions. Understanding these properties not only reveals the behavior of this compound but also guides its practical applications in various chemical settings.

Interesting facts

Interesting Facts About Pentafluoro-lambda5-Phosphane

Pentafluoro-lambda5-phosphane is a fascinating compound that belongs to the family of phosphorus-containing compounds. Here are some intriguing aspects to consider:

  • Structure and Bonding: This compound features a phosphorus atom bonded to five fluorine atoms, leading to a stable but highly reactive arrangement. The unique bonding configuration plays a significant role in its chemical behavior.
  • Reactivity: Pentafluoro-lambda5-phosphane is recognized for its reactivity. It can engage in a variety of chemical reactions due to the electronegative nature of the fluorine atoms, making it a valuable compound in synthetic chemistry.
  • Applications: In the realm of organic synthesis, this phosphorus compound is particularly useful as a reagent. Chemists often employ it for fluorination reactions, which are critical for creating various fluorinated organic compounds.
  • Importance in Materials Science: Pentafluoro-lambda5-phosphane also finds applications in developing materials with desirable properties. Its ability to introduce fluorine into molecules can significantly enhance the properties of polymers and pharmaceuticals.
  • Environmental Impact: As with many fluorinated compounds, pentafluoro-lambda5-phosphane's stability raises environmental concerns. It highlights the need for careful handling and evaluation of safety protocols during its use in industrial settings.

In conclusion, pentafluoro-lambda5-phosphane exemplifies the intricate balance between utility and safety in the field of chemistry. Its unique properties not only make it a subject of interest for chemists but also underscore the importance of responsible stewardship in chemical research and application.

Synonyms
PHOSPHORUS PENTAFLUORIDE
Pentafluorophosphorane
7647-19-0
Phosphorane, pentafluoro-
Phosphorus fluoride (PF5)
Pentafluorophosphorus
Phosphorus(V) fluoride
Phosphorus, fluoride, penta-
UN2198
HSDB 1254
EINECS 231-602-3
0OU1ESO71L
pentafluoridophosphorus
Phosphorus pentafluoride, compressed
pentafluoro-lambda(5)-phosphane
DTXSID9064760
CHEBI:30202
[PF5]
PHOSPHORUS PENTAFLUORIDE [MI]
UN-2198
(PF5)
Phosphorane, pentafluoro
Phosphorus, fluoride, penta
DTXCID9047883
231-602-3
pentafluoro-lambda5-phosphane
PF5
UNII-0OU1ESO71L
Pentafluorophosphorane #
MFCD00040326
AKOS015960671
pentakis(fluoranyl)-$l^{5}-phosphane
UN 2198
InChI=1/F5P/c1-6(2,3,4)
DB-231675
A838720
Q414652
Phosphorus pentafluoride, compressed [UN2198] [Poison gas]