Neptunium(III) iodide

Neptunium(III) iodide
Identifiers
CAS Number	37501-52-3 ;
3D model (JSmol)	Interactive image ;
PubChem CID	145816493 ;
	InChI InChI=1S/3HI.Np/h3*1H;/q;;;+3/p-3 Key: CZAMOQBPJFUDFF-UHFFFAOYSA-K;
	SMILES [I-].[I-].[I-].[Np+3];
Properties
Chemical formula	I3Np
Molar mass	618 g·mol−1
Appearance	brown solid
Density	6.82 g·cm−3
Melting point	767 °C
Structure
Crystal structure	orthorhombic
Space group	Ccmm (No. 63)
Lattice constant	a = 430 pm, b = 1403 pm, c = 995 pm
Related compounds
Other anions	neptunium(III) fluoride ; neptunium(III) chloride ; neptunium(III) bromide
Other cations	uranium(III) iodide ; plutonium(III) iodide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated January 06, 2024

Neptunium(III) iodide is the iodide of neptunium with the chemical formula NpI₃.

Preparation

Neptunium(III) iodide can be produced by the reaction of neptunium dioxide and aluminium iodide:^[3]

6 NpO₂ + 8 AlI₃ → 6 NpI₃ + 4 Al₂O₃ + 3 I₂

Properties

Neptunium(III) iodide is a hygroscopic brown solid with a melting point of 767 °C. It is orthorhombic (plutonium(III) bromide structure), space group Ccmm (No. 63), lattice parameters a = 430pm, b = 1403pm and c = 995pm.^[4]

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Neptunium(III) bromide is a bromide of neptunium, with the chemical formula of NpBr₃.

References

1 2 Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, p. 1969, ISBN 0-12-352651-5
↑ Gmelins Handbuch der anorganischen Chemie , System Nr. 71, Transurane, Teil C, S. 154–155.
↑ Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3, S. 1269.
↑ C. Keller: Die Chemie des Neptuniums. In: Fortschr. chem. Forsch. , 1969/70, 13/1, S. 69.

External reading

Yoshida, Zenko; Johnson, Stephen G.; Kimura, Takaumi; Krsul, John R. (2006), Morss, Lester R.; Edelstein, Norman M.; Fuger, Jean (eds.), "Neptunium", The Chemistry of the Actinide and Transactinide Elements, Dordrecht: Springer Netherlands, pp. 699–812, doi:10.1007/1-4020-3598-5_6, ISBN 978-1-4020-3555-5 , retrieved 2023-09-15

Keller, C. (1969), "Die Chemie des Neptuniums", Anorganische Chemie, Fortschritte der Chemischen Forschung (in German), Berlin/Heidelberg: Springer-Verlag, vol. 13/1, pp. 1–124, doi:10.1007/bfb0051170, ISBN 978-3-540-04488-8 , retrieved 2023-09-15

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[HOWI_1969-1] 1 2 Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, p. 1969, ISBN 0-12-352651-5

[Gmelin-2] Gmelins Handbuch der anorganischen Chemie , System Nr. 71, Transurane, Teil C, S. 154–155.

[brauer-3] Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3, S. 1269.

[Keller-4] C. Keller: Die Chemie des Neptuniums. In: Fortschr. chem. Forsch. , 1969/70, 13/1, S. 69.

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Identifiers

CAS Number	37501-52-3
3D model (JSmol)	Interactive image
PubChem CID	145816493
InChI InChI=1S/3HI.Np/h3*1H;/q;;;+3/p-3 Key: CZAMOQBPJFUDFF-UHFFFAOYSA-K
SMILES [I-].[I-].[I-].[Np+3]
Properties
Chemical formula	I₃Np
Molar mass	618 g·mol⁻¹
Appearance	brown solid^[1]
Density	6.82 g·cm⁻³^[2]
Melting point	767 °C^[1]
Structure
Crystal structure	orthorhombic
Space group	Ccmm (No. 63)
Lattice constant	a = 430 pm, b = 1403 pm, c = 995 pm
Related compounds
Other anions	neptunium(III) fluoride neptunium(III) chloride neptunium(III) bromide
Other cations	uranium(III) iodide plutonium(III) iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references