Neptunium monocarbide

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

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

Preparation

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

NpH_x + C → NpC + (x/₂)H₂↑

Physical properties

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