Plutonium trihydride
| Names | |
|---|---|
| IUPAC name
Plutonium trihydride
| |
| Other names
Plutonium(III) hydride
| |
| Identifiers | |
3D model (JSmol)
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|
| |
| |
| Properties | |
| PuH3 | |
| Molar mass | 247 g·mol−1 |
| Appearance | grey crystals |
| Density | 9610 kg/m3 |
| Melting point | 327 °C (621 °F; 600 K) |
| soluble | |
| Related compounds | |
Other cations
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Plutonium trihydride is an compound of plutonium and hydrogen with the chemical formula PuH3.[1][2][3]
Synthesis
[edit]Plutonium reacts noticeably with hydrogen at room temperature and rapidly when heated:[4]
- 2Pu + 3H2 → 2PuH3
Also, heating of plutonium dihydride with hydrogen:
- 2PuH2 + H2 → 2PuH3
Physical properties
[edit]Plutonium trihydride forms grey crystals of hexagonal crystal structure,[5][6] space group P63/mmc.
Chemical properties
[edit]When heated in an ammonia atmosphere, it forms a plutonium nitride:[7]
- PuH3 + NH3 → PuN + 3H2
It reacts with air:[8]
- PuH3 + O2 + N2 → Pu2O3 + PuN + H2
References
[edit]- ^ "WebElements Periodic Table » Plutonium » plutonium trihydride". winter.group.shef.ac.uk. Retrieved 5 October 2025.
- ^ Balasubramanian, K.; Felter, Thomas E.; Anklam, Thomas; Trelenberg, Thomas W.; McLean, William (11 October 2007). "Atomistic level relativistic quantum modelling of plutonium hydrogen reaction". Journal of Alloys and Compounds. 444–445: 447–452. doi:10.1016/j.jallcom.2006.11.068. Retrieved 5 October 2025.
- ^ Bailar, J. C. (15 October 2013). Comprehensive Inorganic Chemistry. Elsevier. p. 141. ISBN 978-1-4832-8313-5. Retrieved 5 October 2025.
- ^ Peterson, Sigfred (1955). Fundamental Chemistry for Nuclear Reactor Engineers. U. S. Atomic Energy Commission. p. 80. Retrieved 5 October 2025.
- ^ Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 766. Retrieved 5 October 2025.
- ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 221. Retrieved 5 October 2025.
- ^ Ahrland, S.; Bagnall, K. W.; Brown, D. (7 June 2016). The Chemistry of the Actinides: Comprehensive Inorganic Chemistry. Elsevier. p. 150. ISBN 978-1-4831-5934-8. Retrieved 5 October 2025.
- ^ Haschke, John M.; Dinh, Long N. (25 March 2017). "Chemistry and kinetics of the pyrophoric plutonium hydride-air reaction". Journal of Alloys and Compounds. 698: 44–48. doi:10.1016/j.jallcom.2016.12.162. ISSN 0925-8388. Retrieved 5 October 2025.