Neptunium silicide

Neptunium silicide
Names
Other names
Neptunium disilicide
Identifiers
3D model (JSmol)
  • InChI=1S/Np.2Si
    Key: KBXNGDVSIABQJL-UHFFFAOYSA-N
  • [Np].[Si].[Si]
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. The compound forms crystals and does not dissolve in water.

Synthesis

Heating neptunium trifluoride with powdered silicon in vacuum:

Physical properties

Neptunium silicide forms crystals of tetragonal crystal system, space group I41/amd, cell parameters: a = 0.396 nm, c = 1.367 nm, Z = 4.

Neptunium disilicide does not dissolve in water.

Chemical properties

Neptunium disilicide reacts with HCl:

References

  1. ^ 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.
  2. ^ 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.
  3. ^ a b Sheft, Irving; Fried, Sherman (1950). New Neptunium Compounds. U.S. Atomic Energy Commission, Technical Information Division. p. 4. Retrieved 16 August 2021.
  4. ^ 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.
  5. ^ "mp-21298: NpSi2 (tetragonal, I4_1/amd, 141)". materialsproject.org. Retrieved 16 August 2021.