Chemistry:Cerium(III) iodide

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Cerium(III) iodide
Names
IUPAC name
Triiodocerium
Other names
Cerous triiodide, Cerium triiodide
Identifiers
3D model (JSmol)
EC Number
  • 232-228-3
UNII
Properties
CeI3
Molar mass 520.829 g·mol−1
Appearance yellow solid[1][2]
Melting point 766 °C,[1] 752 °C[2]
soluble[2]
Solubility in acetone soluble[2]
Structure[1][3][4]
PuBr3
8-coordinate bicapped trigonal prismatic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cerium(III) iodide (CeI3) is the compound formed by cerium(III) cations and iodide anions.

Preparation

Cerium metal reacts with iodine when heated to form cerium(III) iodide:[2]

2 Ce + 3 I
2
→ 2 CeI
3

It is also formed when cerium reacts with mercury(II) iodide at high temperatures:[2]

2 Ce + 3 HgI
2
→ 2 CeI
3
+ 3 Hg

Structure

Cerium(III) iodide adopts the plutonium(III) bromide crystal structure.[3][4] It contains 8-coordinate bicapped trigonal prismatic Ce3+ ions.[1]

Uses

Cerium(III) iodide is used as a pharmaceutical intermediate[5] and as a starting material for organocerium compounds.[2]

References

  1. 1.0 1.1 1.2 1.3 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240-1241. ISBN 978-0-08-037941-8. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Imamoto, Tsuneo (15 April 2001). "Cerium(III) Iodide". Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons, Ltd.. doi:10.1002/047084289X.rc043. ISBN 9780471936237. https://onlinelibrary.wiley.com/doi/abs/10.1002/047084289X.rc043. 
  3. 3.0 3.1 Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6. 
  4. 4.0 4.1 Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (1964). "Preparation and Crystal Data for Lanthanide and Actinide Triiodides". Inorg. Chem. 3 (8): 1137–1141. doi:10.1021/ic50018a015. https://digital.library.unt.edu/ark:/67531/metadc867868/. 
  5. "7790-87-6 - Cerium(III) iodide, ultra dry, 99.9% (REO) - Cerium triiodide - 13641 - Alfa Aesar". https://www.alfa.com/en/catalog/013641/. 
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