Americium(III) iodide

Americium(III) iodide
Names
IUPAC name
Americium(III) iodide
Other names
Americium triiodide
Identifiers
3D model (JSmol)
  • InChI=1S/Am.3HI/h;3*1H/q+3;;;/p-3
    Key: KZIHWWKUCWPQNZ-UHFFFAOYSA-K
  • [I-].[I-].[I-].[Am+3]
Properties
AmI3
Molar mass 624 g·mol−1
Related compounds
Other anions
 Americium(III) fluoride
Americium(III) chloride
Americium(III) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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

  1. ^ a b Haynes, William M. (2011). CRC Handbook of Chemistry and Physics, 92nd Edition. CRC Press. pp. 4–46. ISBN 9781439855126.
  2. ^ 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.
  3. ^ Gmelins Handbuch der anorganischen Chemie, System No. 71, Transurane, Teil C, pp. 154.


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