Cerium(III) iodide

Last updated
Cerium(III) iodide
Names
IUPAC name
Triiodocerium
Other names
Cerous triiodide, Cerium triiodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.299 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 232-228-3
PubChem CID
UNII
  • InChI=1S/Ce.3HI/h;3*1H/q+3;;;/p-3
    Key: ZEDZJUDTPVFRNB-UHFFFAOYSA-K
  • I[Ce](I)I
Properties
CeI3
Molar mass 520.829 g·mol−1
Appearanceyellow 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).

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

Contents

Preparation

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

2 Ce + 3 I2 → 2 CeI3

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

2 Ce + 3 HgI2 → 2 CeI3 + 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 2 3 4 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN   978-0-08-037941-8.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN   978-0-19-965763-6.
  4. 1 2 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.
  5. ↑ "7790-87-6 - Cerium(III) iodide, ultra dry, 99.9% (REO) - Cerium triiodide - 13641 - Alfa Aesar". alfa.com. Retrieved 2017-09-19.
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