Promethium(III) bromide
Appearance
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Names | |
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IUPAC name
Promethium(III) bromide
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Identifiers | |
3D model (
JSmol ) |
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PubChem CID
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Properties | |
PmBr3 | |
Molar mass | 385 |
Appearance | Red solid[1] |
Melting point | 624[1] |
Related compounds | |
Other anions
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Promethium(III) fluoride Promethium(III) chloride Promethium(III) iodide |
Other cations
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Neodymium(III) bromide Samarium(III) bromide |
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) bromide is an
hexagonal crystal system, with the space group
of P63/mc (No. 176).
Preparation
Promethium(III) bromide can be obtained by reacting hydrogen bromide and promethium(III) oxide:[2]
- Pm2O3 + 6 HBr —500°C→ 2 PmBr3 + 3 H2O
Promethium(III) bromide hydrate cannot be heated to form its anhydrous form. Instead it decomposes in water to form promethium oxybromide:[3]
- PmBr3 + H2O(g) → PmOBr + 2 HBr
References
- ^ ISBN 978-0-470-01006-8.
- ^ W. R. Wilmarth, G. M. Begun, R. G. Haire, et al. Raman spectra of Pm2O3, PmF3, PmCl3, PmBr3 and PmI3. Journal of Raman Spectroscopy, 2005. 19(4)
- .