Neptunium tetraiodide

Neptunium tetraiodide
Names
	IUPAC name Neptunium tetraiodide
Identifiers
3D model (JSmol)	Interactive image;
	InChI InChI=1S/4HI.Np/h4*1H;/q;;;;+4/p-4 Key: KYXVZPGDAXYSTB-UHFFFAOYSA-J;
	SMILES [I-].[I-].[I-].[I-].[Np+4];
Properties
Chemical formula	NpI4
Molar mass	745 g·mol−1
Related compounds
Other anions	Plutonium tetrafluoride
Other cations	Thorium(IV) iodide; Protactinium tetraiodide; Uranium(IV) iodide;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Neptunium tetraiodide is a hypothetical inorganic compound of neptunium and iodine with the chemical formula NpI₄.^[1]^[2] While it has not been discovered, it is expected to be stable.^[3]

Synthesis

Neptunium tetraiodide was attempted to be obtained by heating neptunium tetrachloride with silicon tetraiodide at 200 °C in vacuo. However, this only resulted in the formation of neptunium(III) iodide.^[4]

References

^ Topics in Inorganic and General Chemistry. Elsvier Publishing Company. 1972. p. 225. ISBN 978-0-444-41041-2. Retrieved 27 September 2025.
^ Bagnall, K. W. (1973). The Actinide Elements. Elsevier. p. 79. ISBN 978-0-444-41041-2. Retrieved 27 September 2025.
^ Alburger, D. E.; Perlman, I.; Rasmussen, J. O.; Hyde, Earl K.; Seaborg, Glenn T.; Bishop, George R.; Wilson, Richard; Devons, S.; Goldfarb, L. J. B.; Blin-Stoyle, R. J.; Grace, M. A. (6 December 2012). Kernreaktionen III / Nuclear Reactions III. Springer Science & Business Media. p. 233. ISBN 978-3-642-45878-1. Retrieved 27 September 2025.
^ Koch, Günter (5 October 2013). Transurane: Teil C: Die Verbindungen (in German). Springer-Verlag. p. 154. ISBN 978-3-662-11547-3. Retrieved 27 September 2025.

[1] Topics in Inorganic and General Chemistry. Elsvier Publishing Company. 1972. p. 225. ISBN 978-0-444-41041-2. Retrieved 27 September 2025.

[2] Bagnall, K. W. (1973). The Actinide Elements. Elsevier. p. 79. ISBN 978-0-444-41041-2. Retrieved 27 September 2025.

[3] Alburger, D. E.; Perlman, I.; Rasmussen, J. O.; Hyde, Earl K.; Seaborg, Glenn T.; Bishop, George R.; Wilson, Richard; Devons, S.; Goldfarb, L. J. B.; Blin-Stoyle, R. J.; Grace, M. A. (6 December 2012). Kernreaktionen III / Nuclear Reactions III. Springer Science & Business Media. p. 233. ISBN 978-3-642-45878-1. Retrieved 27 September 2025.

[4] Koch, Günter (5 October 2013). Transurane: Teil C: Die Verbindungen (in German). Springer-Verlag. p. 154. ISBN 978-3-662-11547-3. Retrieved 27 September 2025.

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