Neptunium monocarbide

Neptunium monocarbide
Identifiers
3D model (JSmol)	Interactive image
InChI InChI=1S/C.Np/q-4;+4 Key: BQHWKYDILYTCLN-UHFFFAOYSA-N
SMILES [Np+4].[C-4]
Properties
Chemical formula	CNp
Molar mass	249 g·mol⁻¹
Appearance	black-grey crystals
Density	13.2 g/cm³
Solubility in water	insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chemical compound

Neptunium monocarbide is a binary compound of neptunium metal and carbon with the chemical formula NpC.^[1]^[2]

Preparation

Heating of freshly obtained neptunium hydride with carbon at 1400 °C:^[3]

NpH_x + C → NpC + (x/₂)H₂↑

The compound forms black-grey crystals of cubic crystal system,^[4] spatial group Fm3m.^[5]

^ Lemire, Robert J. (26 August 2001). Chemical Thermodynamics of Neptunium and Plutonium. Elsevier. p. 201. ISBN 978-0-444-50379-4. Retrieved 28 March 2024.
^ Erdos, Paul (6 December 2012). The Physics of Actinide Compounds. Springer Science & Business Media. p. 37. ISBN 978-1-4613-3581-8. Retrieved 28 March 2024.
^ Comprehensive Nuclear Materials. Elsevier. 22 July 2020. p. 187. ISBN 978-0-08-102866-7. Retrieved 28 March 2024.
^ Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 1968. p. 205. ISBN 978-0-08-057860-6. Retrieved 28 March 2024.
^ Donnay, Joseph Désiré Hubert (1972). Crystal Data: Organic compounds. National Bureau of Standards. p. 3. Retrieved 28 March 2024.