French
DeutschNeptunium silicide
| Names | |
|---|---|
| Other names Neptunium disilicide | |
| Identifiers | |
3D model (JSmol) | |
| |
| |
| Properties | |
| NpSi2 | |
| Appearance | Crystals |
| Density | 9.03 |
| insoluble | |
| Related compounds | |
Related compounds | Plutonium silicide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Neptunium silicide is a binary inorganic compound of neptunium and silicon with the chemical formula NpSi
2.[1] The compound forms crystals and does not dissolve in water.[2]
Synthesis
[edit]Heating neptunium trifluoride with powdered silicon in vacuum:[3]
Physical properties
[edit]Neptunium silicide forms crystals[4] of tetragonal crystal system, space group I41/amd, cell parameters: a = 0.396 nm, c = 1.367 nm, Z = 4.[5]
Neptunium disilicide does not dissolve in water.
Chemical properties
[edit]Neptunium disilicide reacts with HCl:[3]
References
[edit]- ^ Donnay, J. D. H.; Nowacki, Werner (1954). Crystal Data: Classification of Substances by Space Groups and their Identification from Cell Dimensions. Geological Society of America. p. 383. ISBN 978-0-8137-1060-0. Retrieved 16 August 2021.
- ^ Koch, Günter (5 October 2013). Transurane: Teil C: Die Verbindungen (in German). Springer-Verlag. p. 245. ISBN 978-3-662-11547-3. Retrieved 16 August 2021.
- ^ a b Sheft, Irving; Fried, Sherman (1950). New Neptunium Compounds. U.S. Atomic Energy Commission, Technical Information Division. p. 4. Retrieved 16 August 2021.
- ^ Zachariasen, William Houlder (1949). The Crystal Structure of Uranium Silicides and of CeSi2, NpSi2, and PuSi2. U.S. Atomic Energy Commission, Technical Information Branch. p. 3. Retrieved 16 August 2021.
- ^ "mp-21298: NpSi2 (tetragonal, I4_1/amd, 141)". materialsproject.org. Retrieved 16 August 2021.