Chemistry:Neptunium arsenide
From HandWiki
| Names | |
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| Other names
Neptunium monoarsenide
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| Identifiers | |
3D model (JSmol)
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| Properties | |
| NpAs | |
| Molar mass | 311.92 |
| Appearance | Crystals |
| Related compounds | |
Related compounds
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Neptunium diarsenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Neptunium arsenide is a binary inorganic compound of neptunium and arsenic with the chemical formula NpAs.[1] The compound forms crystals.
Synthesis
Heating stoichiometric amounts of pure substances:
- [math]\displaystyle{ \mathsf{ Np + As \ \xrightarrow{T, I_2}\ NpAs } }[/math]
Physical properties
Neptunium arsenide forms crystals of several modifications:[2][3]
- Cubic system, space group Fm3m, cell parameters a = 0.5835 nm, exists at temperatures below –131 °С.
- Tetragonal system, cell parameters a = 0.58312 nm, c = 0.58281 nm, exists in the temperature range –131 to –98 °С.
- Cubic system, space group Fm3m, cell parameters a = 0.58318 nm, exists at temperatures above –98 °C.
Neptunium arsenide becomes antiferromagnetic at 175 K.[4][5][6]
References
- ↑ (in en) Los Alamos Science. Los Alamos National Laboratory. 2000. p. 172. https://books.google.com/books?id=_CdVAAAAMAAJ&dq=Neptunium+arsenide+NpAs&pg=PA172. Retrieved 8 August 2021.
- ↑ "mp-2186: NpAs (cubic, Fm-3m, 225)". Materials Project. https://materialsproject.org/materials/mp-2186/.
- ↑ Arya, Balwant Singh; Patle, U. S.; Aynyas, Mahendra (24 April 2019). "High pressure structural and elastic properties of neptunium arsenide". AIP Conference Proceedings 2100 (1): 020148. doi:10.1063/1.5098702. ISSN 0094-243X. Bibcode: 2019AIPC.2100b0148A. https://aip.scitation.org/doi/abs/10.1063/1.5098702?journalCode=apc. Retrieved 8 August 2021.
- ↑ Erdos, Paul (6 December 2012) (in en). The Physics of Actinide Compounds. Springer Science & Business Media. p. 40. ISBN 978-1-4613-3581-8. https://books.google.com/books?id=wZjfBwAAQBAJ&dq=Neptunium+arsenide+NpAs&pg=PA40. Retrieved 8 August 2021.
- ↑ Aldred, A. T.; Dunlap, B. D.; Harvey, A. R.; Lam, D. J.; Lander, G. H.; Mueller, M. H. (1 May 1974). "Magnetic properties of the neptunium monopnictides". Physical Review B 9 (9): 3766–3779. doi:10.1103/PhysRevB.9.3766. Bibcode: 1974PhRvB...9.3766A. https://journals.aps.org/prb/abstract/10.1103/PhysRevB.9.3766. Retrieved 8 August 2021.
- ↑ Blaise, A.; Fournier, J.M.; Damien, D.; Wojakowski, A. (1 February 1983). "Magnetization of neptunium monoarsenide" (in en). Journal of Magnetism and Magnetic Materials 31-34: 233–234. doi:10.1016/0304-8853(83)90229-9. ISSN 0304-8853. Bibcode: 1983JMMM...31..233B. https://www.sciencedirect.com/science/article/abs/pii/0304885383902299. Retrieved 8 August 2021.
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