Chromium(III) iodide

Chromium(III) iodide
Names
IUPAC name
Chromium(III) iodide
Other names
Chromium triiodide, chromic iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.614
EC Number
  • 236-991-3
  • InChI=1S/Cr.3HI/h;3*1H/q+3;;;/p-3
    Key: PPUZYFWVBLIDMP-UHFFFAOYSA-K
  • InChI=1/Cr.3HI/h;3*1H/q+3;;;/p-3/rCrI3/c2-1(3)4
    Key: PPUZYFWVBLIDMP-GXOYXQMQAU
  • [Cr](I)(I)I
Properties
CrI3
Molar mass 432.7095 g·mol−1
Appearance black solid
Density 5.32 g/cm3
Melting point > 600 °C (1,112 °F; 873 K)
Soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Chromium(III) iodide, also known as chromium triiodide, is an inorganic compound with the formula CrI3. It is a black solid that is used to prepare other chromium iodides.

Like the isomorphous chromium(III) chloride (CrCl3), chromium(III) iodide exhibits a cubic-closest packing arrangement in a double-layer crystal lattice. In this structure, chromium exhibits octahedral coordination geometry.

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