French
DeutschTungsten(III) iodide
| Names | |
|---|---|
| Other names Tungsten triiodide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
| |
| Properties | |
| WI3 | |
| Molar mass | 564.6 |
| Appearance | Black solid[1] |
| Insoluble[2] | |
| Related compounds | |
Other anions | Tungsten(III) bromide Tungsten(III) chloride |
Other cations | Chromium(III) iodide Molybdenum(III) iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Tungsten(III) iodide or tungsten triiodide is a chemical compound of tungsten and iodine with the formula WI3.
Preparation
[edit]Tungsten(III) iodide can be prepared by reducing tungsten hexacarbonyl with iodine.[1][3]
Properties
[edit]Tungsten(III) iodide is a black solid that releases iodine at room temperature, and is less stable than molybdenum(III) iodide. It is soluble in acetone and nitrobenzene, and slightly soluble in chloroform.[1]
It decomposes to form tungsten(II) iodide:[1]
![{\displaystyle \mathrm {6WI_{3}\longrightarrow [W_{6}I_{8}]I_{4}+3I_{2}} }](https://wikimedia.org/api/rest_v1/media/math/render/svg/513818b045ab1b8d035327aa9d67afdf15c1d81b)
References
[edit]- ^ a b c d Brauer, Georg; Baudler, Marianne (1981). Handbuch der Präparativen Anorganischen Chemie, Band I. (3rd ed.). Stuttgart: Ferdinand Enke. ISBN 3-432-02328-6.
- ^ Lide, David R. (2004-06-29). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press.
- ^ Ströbele, Markus; Meyer, Hans-Jürgen (2019). "Pandora's box of binary tungsten iodides". Dalton Transactions. 48 (5): 1547–1561. doi:10.1039/C8DT04004D. PMID 30574976. S2CID 58651255.