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Cerium(III) iodide
Chemical compound

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

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Preparation

Cerium metal reacts with iodine when heated to form cerium(III) iodide:1

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.34 It contains 8-coordinate bicapped trigonal prismatic Ce3+ ions.5

Uses

Cerium(III) iodide is used as a pharmaceutical intermediate6 and as a starting material for organocerium compounds.7

References

  1. 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. 9780471936237 ↩

  2. 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. 9780471936237 ↩

  3. Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6. 978-0-19-965763-6 ↩

  4. 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. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8. 978-0-08-037941-8 ↩

  6. "7790-87-6 - Cerium(III) iodide, ultra dry, 99.9% (REO) - Cerium triiodide - 13641 - Alfa Aesar". alfa.com. Retrieved 2017-09-19. https://www.alfa.com/en/catalog/013641/ ↩

  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. 9780471936237 ↩