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Tungsten(III) iodide

From Wikipedia, the free encyclopedia
Tungsten(III) iodide
Names
Other names
Tungsten triiodide
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/3HI.W/h3*1H;/q;;;+3/p-3
    Key: BHPNVJNBEDSWEE-UHFFFAOYSA-K
  • I[W](I)I
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

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Tungsten(III) iodide can be prepared by reducing tungsten hexacarbonyl with iodine.[1][3]

Properties

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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]

References

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  1. ^ 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.
  2. ^ Lide, David R. (2004-06-29). CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press.
  3. ^ 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.