Chemistry:Promethium(III) hydroxide
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Identifiers | |
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3D model (JSmol)
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Properties | |
Pm(OH)3 | |
Appearance | purplish-pink solid |
Density | 5.1 g/cm3 |
Structure | |
hexagonal | |
a = 6.39 Å, c = 3.68 Å
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Related compounds | |
Other anions
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promethium oxide |
Other cations
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neodymium(III) hydroxide samarium(III) hydroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Promethium(III) hydroxide is an inorganic compound with a chemical formula Pm(OH)3. It is a radioactive compound.
Production
Promethium(III) hydroxide can be produced by reacting ammonia water with a solution of a promethium(III) salt, from which promethium(III) hydroxide precipitates as a purplish-pink amorphous solid. By heating with water, it can be forced to crystallize, giving hexagonal crystals isomorphous with other rare earth hydroxides:[1]
- Pm3+ + 3OH− → Pm(OH)3↓
References
- ↑ Weigel, Fritz; Scherer, Volker (1967). "Die Chemie Des Promethiums. VI. Kristallines Promethium(III)-hydroxid" (in de). Radiochimica Acta 7 (2–3): 72–74. doi:10.1524/ract.1967.7.23.72.
Original source: https://en.wikipedia.org/wiki/Promethium(III) hydroxide.
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