Chemistry:Curium(III) iodide

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Curium(III) iodide
Kristallstruktur Bismut(III)-iodid.png
Names
Other names
Curium triiodide
Identifiers
3D model (JSmol)
Properties
CmI3
Molar mass 628 g·mol−1
Appearance white crystals
Related compounds
Related compounds
 Americium triiodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Tracking categories (test):

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

Synthesis

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

2Cm + 3I
2 → 2CmI
3

Also by the reaction of curium(III) chloride with ammonium iodide:[5][6]

CmCl
3 + 3NH
4I → CmI
3 + 3NH
4Cl

Physical properties

Curium(III) iodide is a colorless ionic compound consisting of Cm3+ and I− ions. It forms white crystals the hexagonal crystal system in the space group R3 (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 of bismuth(III) iodide.[5][7]

References

  1. ↑ Lumetta, Gregg J.; Thompson, Major C.; Penneman, Robert A.; Eller, P. Gary (2006). "Curium" (in en). 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. https://link.springer.com/chapter/10.1007/1-4020-3598-5_9. Retrieved 3 July 2023. 
  2. ↑ Brown, David; Canterford, J. H.; Colton, Ray (1968) (in en). Halides of the Transition Elements: Halides of the lanthanides and actinides, by D. Brown. Wiley. p. 260. ISBN 978-0-470-10840-6. https://books.google.com/books?id=EHZMAAAAYAAJ&q=curium+triiodide. Retrieved 3 July 2023. 
  3. ↑ "WebElements Periodic Table » Curium » curium triiodide". winter.group.shef.ac.uk. https://winter.group.shef.ac.uk/webelements/compounds/curium/curium_triiodide.html. 
  4. ↑ Seaborg, G. T.; James, R. A.; Ghiorso, A. (1949). "The Transuranium Elements". Science (McGraw-Hill) 104 (2704): 1554–1571. https://www.jstor.org/stable/1675046. Retrieved 3 July 2023. 
  5. ↑ 5.0 5.1 Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (July 1965). "Crystal Structures of the Trifluorides, Trichlorides, Tribromides, and Triiodides of Americium and Curium" (in en). Inorganic Chemistry 4 (7): 985–986. doi:10.1021/ic50029a013. ISSN 0020-1669. https://digital.library.unt.edu/ark:/67531/metadc1035960/m2/1/high_res_d/4582276.pdf. Retrieved 3 July 2023. 
  6. ↑ Koch, Günter (5 October 2013) (in de). Transurane: Teil C: Die Verbindungen. Springer-Verlag. p. 154. ISBN 978-3-662-11547-3. https://books.google.com/books?id=WCi2BgAAQBAJ&dq=curium+triiodide&pg=PA154. Retrieved 3 July 2023. 
  7. ↑ Macintyre, Jane E. (23 July 1992) (in en). Dictionary of Inorganic Compounds. CRC Press. p. 3046. ISBN 978-0-412-30120-9. https://books.google.com/books?id=9eJvoNCSCRMC&dq=curium+triiodide&pg=PA3046. Retrieved 3 July 2023. 
HI He
LiI BeI2 BI3 CI4 NI3 I2O4,
I2O5,
I4O9 		IF,
IF3,
IF5,
IF7 		Ne
NaI MgI2 AlI3 SiI4 PI3,
P2I4 		S ICl,
ICl3 		Ar
KI CaI2 Sc TiI4 VI3 CrI3 MnI2 FeI2 CoI2 NiI2 CuI ZnI2 Ga2I6 GeI2,
GeI4 		AsI3 Se IBr Kr
RbI SrI2 YI3 ZrI4 NbI5 Mo Tc Ru Rh Pd AgI CdI2 InI3 SnI4,
SnI2 		SbI3 TeI4 I Xe
CsI BaI2   HfI4 TaI5 W Re Os Ir Pt AuI Hg2I2,
HgI2 		TlI PbI2 BiI3 Po AtI Rn
Fr RaI2   Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
↓
La Ce Pr Nd Pm SmI2 Eu Gd TbI3 Dy Ho Er Tm Yb Lu
Ac ThI4 Pa UI3,
UI4 		Np Pu Am Cm Bk Cf EsI3 Fm Md No Lr



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