Uranium(IV) iodide
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Identifiers | |
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3D model (JSmol) | |
ChemSpider | |
ECHA InfoCard | 100.033.381 |
EC Number |
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PubChem CID | |
CompTox Dashboard (EPA) | |
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Properties | |
UI4 | |
Molar mass | 745.647 g/mol |
Appearance | black hygroscopic crystals |
Structure[1] | |
monoclinic | |
C2/c, No. 15 | |
a = 1396.7 pm, b = 847.2 pm, c = 751 pm α = 90°, β = 90.54°, γ = 90° | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards | Radioactive |
GHS labelling: | |
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Danger | |
H300, H330, H373, H411 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Uranium(IV) iodide, also known as uranium tetraiodide, is an inorganic chemical compound. It is a salt of uranium in oxidation state +4 and iodine.
Preparation
[edit]Uranium tetraiodide can be prepared from the reaction between uranium and an excess of iodine.[2]
Properties
[edit]Uranium tetraiodide is a black solid and forms needle-like crystals. Upon heating, it dissociates into uranium triiodide and iodine gas.[2] It crystallizes in the monoclinic crystal system, space group C2/c.[1]
References
[edit]- ^ a b Levy, J. H.; Taylor, J. C.; Waugh, A. B. (1980). "Crystal structure of uranium(IV) tetraiodide by x-ray and neutron diffraction". Inorganic Chemistry. 19 (3): 672–674. doi:10.1021/ic50205a019. ISSN 0020-1669.
- ^ a b Brauer, Georg (1978). Handbuch der Präparativen Anorganischen Chemie. Vol. II (3rd ed.). Stuttgart: Ferdinand Enke. p. 1218. ISBN 3-432-87813-3.