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Americium(III) iodide or americium triiodide is the chemical compound, a salt composed of americium and iodine with the formula AmI3.
Preparation
Americium(III) iodide can be prepared by reacting americium(III) chloride with ammonium iodide:[2]
- AmCl3 + 3 NH4I → AmI3 + 3NH4Cl
Properties
Americium(III) iodide takes the form of yellow crystals. The crystal form is orthorhombic. It melts around 960 °C. The density is 6.9 g/cm3.[1] The compound consists of Am3+ and I− ions. It crystallizes in the trigonal crystal system in the space group R3 (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 isotypic with bismuth(III) iodide.[2][3]
References
- ^ a b Haynes, William M. (2011). CRC Handbook of Chemistry and Physics, 92nd Edition. CRC Press. pp. 4–46. ISBN 9781439855126.
- ^ a b Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (Jul 1965). "Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium". Inorganic Chemistry. 4 (7): 985–986. doi:10.1021/ic50029a013. ISSN 0020-1669. S2CID 96551460.
- ^ Gmelins Handbuch der anorganischen Chemie, System No. 71, Transurane, Teil C, pp. 154.
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