Praseodymium(IV) fluoride
Names
Other names
tetrafluoropraseodymium, praseodymium tetrafluoride
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/4FH.Pr/h4*1H;/q;;;;+4/p-4
    Key: AQHKOMUMLGCMJB-UHFFFAOYSA-J
  • F[Pr](F)(F)F
Properties
F4Pr
Molar mass 216.90127 g·mol−1
Appearance light-yellow crystals
Density g/cm3
reacts with water
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
Related compounds
Other cations
CeF4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Praseodymium(IV) fluoride (also praseodymium tetrafluoride) is a binary inorganic compound, a highly oxidised metal salt of praseodymium and fluoride[1] with the chemical formula PrF4.

Synthesis

Praseodymium(IV) fluoride can be prepared by the effect of krypton difluoride on praseodymium(IV) oxide:[2]

Praseodymium(IV) fluoride can also be made by the dissolution of sodium hexafluoropraseodymate(IV) in liquid hydrogen fluoride:[3]

Properties

Praseodymium(IV) fluoride forms light yellow crystals. The crystal structure is anticubic and isomorphic to that of uranium tetrafluoride UF4.

Decomposes when heated:

Due to the high normal potential of the tetravalent praseodymium cations (Pr3+ / Pr4+: +3.2 V), praseodymium(IV) fluoride decomposes in water, releasing oxygen, O2.

See also

References

  1. ^ Vent-Schmidt, Thomas; Riedel, Sebastian (November 6, 2015). "Investigation of Praseodymium Fluorides: A Combined Matrix-Isolation and Quantum-Chemical Study". Inorganic Chemistry. 54 (23): 11114–11120. doi:10.1021/acs.inorgchem.5b01175. PMID 26544761. Retrieved 18 June 2021.
  2. ^ Meyer, G.; Morss, Lester R. (1990-12-31). Synthesis of Lanthanide and Actinide Compounds. Springer Science & Business Media. p. 367. ISBN 978-0-7923-1018-1. Retrieved 18 June 2021.
  3. ^ Emeléus, H. J.; Sharpe, A. G. (1977-09-01). Advances in Inorganic Chemistry and Radiochemistry. Academic Press. p. 368. ISBN 978-0-08-057869-9. Retrieved 18 June 2021.