Cerium(III) iodide
| Names | |
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| IUPAC name
Triiodocerium
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| Other names
Cerous triiodide, Cerium triiodide
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| Identifiers | |
3D model (JSmol)
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| ECHA InfoCard | 100.029.299 |
| EC Number |
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PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| 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).
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Cerium(III) iodide (CeI3) is the compound formed by cerium(III) cations and iodide anions.
Preparation
[edit]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
[edit]Cerium(III) iodide adopts the plutonium(III) bromide crystal structure.[3][4] It contains 8-coordinate bicapped trigonal prismatic Ce3+ ions.[1]
Uses
[edit]Cerium(III) iodide is used as a pharmaceutical intermediate[5] and as a starting material for organocerium compounds.[2]
References
[edit]- ^ a b c d Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
- ^ a b c d e f g 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.
- ^ a b Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6.
- ^ a b 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.
- ^ "7790-87-6 - Cerium(III) iodide, ultra dry, 99.9% (REO) - Cerium triiodide - 13641 - Alfa Aesar". alfa.com. Retrieved 2017-09-19.
| Cerium(II) | |||
|---|---|---|---|
| Cerium(III) |
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| Cerium(III,IV) |
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| Cerium(IV) | |||
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