Neptunium(IV) phosphide

Neptunium(IV) phosphide

Identifiers
CAS Number	111117-76-1  Y
3D model (JSmol)	Interactive image
InChI InChI=1S/3Np.4P Key: BLKYGPPFNRPFDX-UHFFFAOYSA-N
SMILES [Np].[Np].[Np].[P].[P].[P].[P]
Properties
Chemical formula	Np3P4
Molar mass	835 g·mol−1
Appearance	black crystals
Solubility in water	insoluble
Related compounds
Related compounds	Neptunium(III) phosphide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Neptunium(IV) phosphide is a binary inorganic compound of neptunium metal and phosphorus with the chemical formula Np₃P₄. ^[1]

Preparation

Neptunium(IV) phosphide can be formed from the fusion of stoichiometric amounts of neptunium and red phosphorus in an evacuated and sealed quartz tube at 750 °C: ^{[2] [3]}

3Np + 4P → Np₃P₄

Physical properties

Neptunium(IV) phosphide forms black crystals of cubic crystal system, spatial group I 43d. Isostructural with Th₃P₄. ^[4]

It does not dissolve in water.

Chemical properties

The compound reacts with concentrated HCl to give a green solution: ^[5]

Np₃P₄ + 12HCl → 3NpCl₄ + 4PH₃

References

1. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3671. ISBN   978-0-412-30120-9 . Retrieved 5 March 2024.
2. Isotopic Power Sources ...: A Compendium : Property and Processes Review. Martin Nuclear Division. 1961. p. 2-170. Retrieved 19 March 2024.
3. Morss, L. R.; Edelstein, Norman M.; Fuger, Jean (31 December 2007). The Chemistry of the Actinide and Transactinide Elements (3rd ed., Volumes 1-5). Springer Science & Business Media. p. 743. ISBN   978-1-4020-3598-2 . Retrieved 19 March 2024.
4. Koch, Günter (5 October 2013). Transurane: Teil C: Die Verbindungen (in German). Springer-Verlag. p. 249. ISBN   978-3-662-11547-3 . Retrieved 19 March 2024.
5. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3671. ISBN   978-0-412-30120-9 . Retrieved 19 March 2024.