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Promethium(III) iodide

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. ^ a b c 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