Promethium(III) iodide
| Names | |
|---|---|
| Other names
Promethium iodide
Promethium triiodide | |
| Identifiers | |
3D model (JSmol)
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| 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).
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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[edit]
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[edit]
- ^ 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.
- ^ 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.
- ^ Weigel, Fritz. "Die Chemie des Promethiums...". Radiochimica Acta: 591. more complete reference required
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