Promethium(III) iodide
Names
Other names
Promethium iodide
Promethium triiodide
Identifiers
3D model (JSmol)
  • InChI=1S/3HI.Pm/h3*1H;/q;;;+3/p-3
    Key: CCGSLKOPQLRTPK-UHFFFAOYSA-K
  • [I-].[I-].[I-].[Pm+3]
Properties
PmI3
Appearance red solid[1]
Melting point 695 °C[1]
Related compounds
Other anions
 promethium(III) fluoride
promethium(III) chloride
promethium(III) bromide
Other cations
 neodymium(III) iodide
samarium(III) iodide
Related compounds
 promethium diiodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Promethium(III) iodide is an inorganic compound, with the chemical formula of PmI3. It is a red radioactive solid with a melting point of 695 °C.[1]

Preparation

Promethium(III) iodide is obtained by reacting anhydrous hydrogen iodide and promethium(III) chloride at a high temperature:

PmCl3 + 3 HI → PmI3 + 3 HCl[2]

From the reaction of a HI-H2 mixture and promethium oxide (Pm2O3), promethium(III) iodide cannot be produced, and only promethium oxyiodide (PmOI) can be obtained. Promethium oxide reacts with molten aluminum iodide at 500°C to form promethium iodide.[3][4]

References

  1. 1 2 3 Wiberg, Egon; Wiberg, Nils (2007). Holleman, Arnold F.; Fischer, Gerd (eds.). Lehrbuch der anorganischen Chemie (102., stark umgearbeitete und verbesserte Auflage ed.). Berlin New York: Walter de Gruyter. ISBN 978-3-11-017770-1.
  2. ↑ Wilmarth, W. R.; Begun, G. M.; Haire, R. G.; et al. (2005). "Raman spectra of Pm2O3, PmF3, PmCl3, PmBr3 and PmI3". Journal of Raman Spectroscopy. 19 (4).
  3. ↑ Salzberg, H. W. (1958). "Gmelins Handbook of Inorganic Chemistry". Journal of the Electrochemical Society. 105 (6): 112C. doi:10.1149/1.2428830. ISSN 0013-4651.
  4. ↑ Weigel, Fritz. "Die Chemie des Promethiums...". Radiochimica Acta: 591. more complete reference required
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