Promethium(III) fluoride

Crystal structure
IUPAC name
Promethium(III) fluoride
Other names
Promethium trifluoride
3D model (JSmol)
  • InChI=1S/3FH.Pm/h3*1H;/q;;;+3/p-3
  • [F-].[F-].[F-].[Pm+3]
Molar mass 202 g/mol[1]
Appearance pink solid[1]
Melting point 1338 °C[1]
Rhombohedral, hR24
P3c1, No. 165[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Promethium(III) fluoride or promethium trifluoride is a salt of promethium and fluorine with the formula PmF3.

Promethium(III) fluoride is sparingly soluble in water. It reacts with metallic lithium to yield lithium fluoride and metallic promethium:[3]


  1. ^ a b c Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.84. ISBN 1-4398-5511-0.
  2. ^ Zachariasen, W. H. (1949). "Crystal chemical studies of the 5f-series of elements. XII. New compounds representing known structure types". Acta Crystallographica. 2 (6): 388–390. doi:10.1107/S0365110X49001016.
  3. ^ Weigel, F. (1963). "Darstellung von metallischem Promethium". Angewandte Chemie. 75 (10): 451. Bibcode:1963AngCh..75..451W. doi:10.1002/ange.19630751009.