Neptunium (III) iodide

Crystal structure
	__ Np 3+ __ I -
Crystal system	orthorhombic
Space group	Ccmm (No. 63, position 2)
Lattice parameters	a = 430 pm ; b = 1403 pm ; c = 995 pm
General
Surname	Neptunium (III) iodide
other names	Neptunium triiodide
Ratio formula	NpI 3
Brief description	brown solid
External identifiers / databases
Wikidata	Q1977874
properties
Molar mass	617.76 g mol −1
Physical state	firmly
density	6.82 g cm −3
Melting point	767 ° C
Hazard and safety information
	; Radioactive
GHS hazard labeling ; no classification available
GHS hazard labeling ; no classification available
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Neptunium (III) iodide is a chemical compound made up of the elements neptunium and iodine . It has the formula NpI ₃ and belongs to the iodide class of substances .

presentation

Neptunium (III) iodide can be produced by reacting neptunium (IV) oxide (NpO ₂ ) with aluminum iodide (AlI ₃ ).

{\ displaystyle {\ ce {6 NpO2 + 8 AlI3 -> 6 NpI3 + 4 Al2O3 + 3 I2}}}

properties

Neptunium (III) iodide is a brown, moisture-sensitive solid that melts at 767 ° C. It crystallizes in the orthorhombic crystal system ( plutonium (III) bromide type) in the space group Ccmm (No. 63, position 2) with the lattice parameters a = 430 pm , b = 1403 pm and c = 995 pm. Template: room group / 63.2

safety instructions

Classifications according to the CLP regulation are not available because they only include chemical hazard and play a completely subordinate role compared to the hazards based on radioactivity . The latter also only applies if the amount of substance involved is relevant.

Individual evidence

↑ ^a ^b ^c ^d C. Keller: The chemistry of Neptunium. In: Fortschr. chem. Forsch. , 1969/70 , 13/1 , p. 69.
^ ^A ^b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1969.
^ Gmelin's Handbook of Inorganic Chemistry , System No. 71, Transurane, Part C, pp. 154–155.
↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1269.

literature

Zenko Yoshida, Stephen G. Johnson, Takaumi Kimura, John R. Krsul: Neptunium , in: Lester R. Morss, Norman M. Edelstein, Jean Fuger (eds.): The Chemistry of the Actinide and Transactinide Elements , Springer, Dordrecht 2006 ; ISBN 1-4020-3555-1 , pp. 699-812 ( doi : 10.1007 / 1-4020-3598-5_6 ).
C. Keller: The chemistry of neptunium. In: Fortschr. chem. Forsch. , 1969/70 , 13/1 , pp. 1–124 ( doi : 10.1007 / BFb0051170 ).

[Keller-1] C. Keller: The chemistry of Neptunium. In: Fortschr. chem. Forsch. , 1969/70 , 13/1 , p. 69.

[HOWI_1969-2] A ^b A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1969.

[Gmelin-3] Gmelin's Handbook of Inorganic Chemistry , System No. 71, Transurane, Part C, pp. 154–155.

[NV-4] The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.

[brauer-5] Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 1269.