Neptunium arsenide

Neptunium arsenide  Names

Other names

Neptunium monoarsenide

Identifiers

CAS Number

* 39350-08-8 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 129549224

InChI

* InChI=1S/As.Np

Key: AUGTYUNFKAYNPM-UHFFFAOYSA-N

SMILES

* [Np].[As]

Properties

Chemical formula

| NpAs
Molar mass | 311.92
Appearance  | Crystals
Related compounds

Related compounds

| 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:

Np+As →T,I2 NpAs

## 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

1. ↑ (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.
2. ↑ "mp-2186: NpAs (cubic, Fm-3m, 225)". Materials Project. https://materialsproject.org/materials/mp-2186/.
3. ↑ 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.
4. ↑ 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.
5. ↑ 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.
6. ↑ 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.

* v
* t
* e

Neptunium compounds

Np(III)|

* NpF3
* NpCl3
* NpBr3
* NpI3

Np(IV)|

* NpF4
* NpCl4
* NpBr4
* NpO2
* Np(C8H8)2

Np(V)|

* NpF5

Np(VI)|

* NpF6

* v
* t
* e

Arsenic compounds

* AsBr3
* AsCl3
* AsCl5
* AsF3
* AsF5
* AsH3
* AsHgI4
* AsI3
* As2O3
* As2O5
* As2S3
* As2S5
* As2Se3
* As4S4

Template:Arsenides

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Neptunium arsenide. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Neptunium_arsenide&oldid=4175320"
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template