Promethium(III) iodide
Promethium(III) iodide is an inorganic compound, with the chemical formula of PmI3. It is radioactive.
| 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).
Infobox references | |
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), only promethium oxyiodide (PmOI) can be obtained. Promethium oxide reacts with molten aluminum iodide at 500°C to form promethium iodide.[3]
References
- A. F. Holleman, E. Wiberg, N. Wiberg: Lehrbuch der Anorganischen Chemie. 102. Auflage. de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1, p 1942.
- 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).
- Weigel, Fritz. "Die Chemie des Promethiums...". Radiochimica Acta: 591. more complete reference required
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