Promethium(III) fluoride

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Promethium(III) fluoride
Other names Promethium trifluoride
Identifiers
Standard InChI InChI=1S/3FH.Pm/h3*1H;/q;;;+3/p-3
Standard InChIKey GBTXURQYFJSURZ-UHFFFAOYSA-K
CAS number [13709-45-0]
Properties[1]
Chemical formula PmF3
Molar mass 203.91 g mol−1 [note 1]
Appearance purple-pink solid
Melting point

1338 °C

Structure[1][3]
Crystal structure Lanthanum trifluoride
Related compounds
Other anions Promethium(III) chloride
Promethium(III) bromide
Promethium(III) iodide
Other cations Praseodymium(III) fluoride
Neodymium(III) fluoride
Samarium(III) fluoride
Europium(III) fluoride
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Promethium(III) fluoride, PmF3, is the only known fluoride of promethium. It is prepared (on a 100-µg scale) by reacting gaseous fluorine with promethium(III) oxide at 300 °C, and has the lanthanum trifluoride structure with eleven-coordinate promethium.[1]

Notes and references

Notes

  1. The molar mass is based on promethium-147 (t½ = 2.6234(2) a; Ar = 146.915 1385(26)),[2] the most commonly encountered isotope of promethium.

References

  1. 1.0 1.1 1.2 Cotton, Simon Lanthanide and Actinide Chemistry, 2nd ed.; Wiley: New York, 2006; pp 115–17. ISBN 0470010061.
  2. Audi, G.; Bersillon, O.; Blachot, J.; Wapstra, A. H. The NUBASE evaluation of nuclear and decay properties. Nucl. Phys. A 2003, 729, 3–128. doi:10.1016/j.nuclphysa.2003.11.001, <http://amdc.in2p3.fr/nubase/Nubase2003.pdf>.
  3. Wilmarth, W. R.; Haire, R. G.; Young, J. P.; Ramey, D. W.; Peterson, J. R. Absorption spectrophotometric and X-ray diffraction studies of the trihalides of promethium in the solid state. J. Less Common Met. 1988, 141 (2), 275–84. DOI: 10.1016/0022-5088(88)90413-4.

Further reading

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