Americium (III) iodide

Crystal structure
	__ On 3+ __ I -
Crystal system	hexagonal
Space group	R 3 (No. 148)
Lattice parameters	a = 742 pm ; c = 2055 pm
General
Surname	Americium (III) iodide
other names	Americium triiodide
Ratio formula	AmI 3
Brief description	light yellow solid
External identifiers / databases
Wikidata	Q467656
properties
Molar mass	623.78 g mol −1
Physical state	firmly
density	6.04 g cm −3
Melting point	950 ° 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 .

Americium (III) iodide is an iodide of the artificial element and actinoid americium with the empirical formula AmI ₃ . Americium occurs in this salt in the +3 oxidation state.

presentation

Americium (III) chloride is reacted with ammonium iodide for the synthesis of americium (III) iodide .

{\ displaystyle {\ ce {AmCl3 + 3 NH4I -> AmI3 + 3 NH4Cl}}}

properties

Americium (III) iodide is a light yellow ion compound consisting of Am ³⁺ and I ^- ions. It crystallizes in the trigonal crystal system in the space group R 3 (space group no. 148) with the lattice parameters a = 742 pm and c = 2055 pm and six formula units per unit cell . Its crystal structure is isotype with bismuth (III) iodide . Template: room group / 148

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 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.
↑ ^a ^b Gmelin's Handbook of Inorganic Chemistry , System No. 71, Transurane, Part C, p. 154.
↑ 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.
↑ ^a ^b L. B. Asprey, TK Keenan, FH Kruse: Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium , in: Inorg. Chem. , 1965 , 4 (7), pp. 985-986 ( doi : 10.1021 / ic50029a013 ).

literature

Wolfgang H. Runde, Wallace W. Schulz: Americium , 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. 1265-1395 ( doi : 10.1007 / 1-4020-3598-5_8 ).

[HOWI_1969-1] 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-2] Gmelin's Handbook of Inorganic Chemistry , System No. 71, Transurane, Part C, p. 154.

[NV-3] 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.

[asprey-4] L. B. Asprey, TK Keenan, FH Kruse: Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium , in: Inorg. Chem. , 1965 , 4 (7), pp. 985-986 ( doi : 10.1021 / ic50029a013 ).