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Curium(III) iodide

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(Redirected fromCurium triiodide)
Curium(III) iodide
Names
Other names
Curium triiodide
Identifiers
3D model (JSmol)
  • InChI=1S/Cm.3HI/h;3*1H/q+3;;;/p-3
    Key: UVXBBRRWLDYFRE-UHFFFAOYSA-K
  • [I-].[I-].[I-].[Cm+3]
Properties
CmI3
Molar mass628 g·mol−1
Appearancewhite crystals
Related compounds
Related compounds
Americium triiodide
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Curium(III) iodide is the chemical compound with the formulaCmI3.[1][2][3] Since all isotopes of curium are only artificially produced, the compound has no natural occurrence.

Synthesis

[edit]

Elemental curium and iodine can be reacted to synthesize curium(III) iodide.[4]

2Cm + 3I2 → 2CmI3

Also by the reaction ofcurium(III) chloride withammonium iodide:[5][6]

CmCl3 + 3NH4I → CmI3 + 3NH4Cl

Physical properties

[edit]

Curium(III) iodide is a colorless ionic compound consisting of Cm3+ and I− ions. It forms white crystals thehexagonal crystal system in the space groupR3 (space group no. 148) with the lattice parameters a = 744 pm and c = 2040 pm with six units per unit cell. Its crystal structure is isotypic with that ofbismuth(III) iodide.[5][7]

References

[edit]
  1. ^Lumetta, Gregg J.; Thompson, Major C.; Penneman, Robert A.; Eller, P. Gary (2006)."Curium".The Chemistry of the Actinide and Transactinide Elements.Springer Netherlands. pp. 1397–1443.doi:10.1007/1-4020-3598-5_9.ISBN 978-1-4020-3598-2. Retrieved3 July 2023.
  2. ^Brown, David; Canterford, J. H.; Colton, Ray (1968).Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown. Wiley. p. 260.ISBN 978-0-470-10840-6. Retrieved3 July 2023.
  3. ^"WebElements Periodic Table » Curium » curium triiodide". winter.group.shef.ac.uk. Retrieved3 July 2023.
  4. ^Seaborg, G. T.; James, R. A.; Ghiorso, A. (1949)."The Transuranium Elements".Science.104 (2704).McGraw-Hill:1554–1571.JSTOR 1675046. Retrieved3 July 2023.
  5. ^abAsprey, L. B.; Keenan, T. K.; Kruse, F. H. (July 1965)."Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium"(PDF).Inorganic Chemistry.4 (7):985–986.doi:10.1021/ic50029a013.ISSN 0020-1669.S2CID 96551460. Retrieved3 July 2023.
  6. ^Koch, Günter (5 October 2013).Transurane: Teil C: Die Verbindungen (in German).Springer-Verlag. p. 154.ISBN 978-3-662-11547-3. Retrieved3 July 2023.
  7. ^Macintyre, Jane E. (23 July 1992).Dictionary of Inorganic Compounds.CRC Press. p. 3046.ISBN 978-0-412-30120-9. Retrieved3 July 2023.
Curium(III)
Curium(IV)
Curium(VI)
Salts and covalent derivatives of theiodide ion
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