Uranyl iodide
| Names | |
|---|---|
Other names
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| |
| |
| Properties | |
| UO2I2 | |
| Molar mass | 523.836 g·mol−1 |
| Appearance | red crystals[1] |
| Related compounds | |
Other anions
|
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
| |
Uranyl iodide is an compound of uranium, oxygen, and iodine with the chemical formula UO2I2.[2][3]
Synthesis
Uranyl iodide can be obtained by treating UO2(OTf)2 with pure Me3SiI,[4]reducing uranyl iodate with aqueous sulfur dioxide, the decomposition of uranyl sulfate with barium or calcium iodide,[5] or adding barium iodide in excess to an ether solution of uranyl nitrate.[1]
Chemical properties
The compound reacts with water and oxygen to produce uranyl hydroxide:[6]
- UO2I2 + H2O + 1/2O2 → UO2(OH)2 + I2
References
- ^ a b Vallance, Reece H.; Eldridge, Arthur A. (1926). Chromium and Its Congeners. Griffin. p. 299. Retrieved 4 October 2025.
- ^ Cotton, S. A. (15 December 2005). "16 Scandium, yttrium, the lanthanides and the actinides". Annual Reports Section 'A' (Inorganic Chemistry). 101: 294–318. doi:10.1039/B410468B. ISSN 1460-4760.
- ^ Prins, G; Cordfunke, E. H. P; Ouweltjes, W (1 October 1978). "Standard enthalpies of formation of uranium compounds V. UO2Br2, UO2Br2·H2O, UO2Br2·3H2O, and UO2(OH)Br·2H2O A comment on the stability of uranyl iodide and its hydrates". The Journal of Chemical Thermodynamics. 10 (10): 1003–1010. doi:10.1016/0021-9614(78)90062-9. ISSN 0021-9614.
- ^ Berthet, Jean-Claude; Nierlich, Martine; Ephritikhine, Michel (24 March 2004). "Synthesis of the stable UO2I2, the last of the uranyl dihalides. X-Ray crystal structure of [UO2I2(py)3]". Chemical Communications (7): 870–871. doi:10.1039/B400717D. ISSN 1364-548X.
- ^ Gutmann, Viktor (2 December 2012). Halogen Chemistry. Elsevier. p. 367. ISBN 978-0-323-14847-4. Retrieved 4 October 2025.
- ^ Rabinowitch, Eugene (1954). Photochemistry of Uranyl Compounds. U.S. Atomic Energy Commission. p. 17. Retrieved 4 October 2025.