Promethium(III) iodide - Reference.org

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Promethium(III) iodide

Chemical compound

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.

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Preparation

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

PmCl3 + 3 HI → PmI3 + 3 HCl²

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

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. 978-3-11-017770-1 ↩
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). ↩
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. https://dx.doi.org/10.1149/1.2428830 ↩
Weigel, Fritz. "Die Chemie des Promethiums...". Radiochimica Acta: 591. more complete reference required ↩