Indium(III) iodide

Indium(III) iodide
Names
	Other names Indium triiodide
Identifiers
CAS Number	13510-35-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	75371;
ECHA InfoCard	100.033.475
EC Number	236-839-6;
PubChem CID	83539;
CompTox Dashboard (EPA)	DTXSID5065516;
	InChI InChI=1S/3HI.In/h3*1H;/q;;;+3/p-3 Key: RMUKCGUDVKEQPL-UHFFFAOYSA-K;
	SMILES [In](I)(I)I;
Properties
Chemical formula	InI3
Molar mass	495.53
Appearance	Yellow solid
Density	4.69 g/cm3
Melting point	210 °C (410 °F; 483 K)
Boiling point	500 °C (932 °F; 773 K)
Related compounds
Other anions	Indium(III) bromide; Indium(III) chloride
Other cations	Aluminum iodide; Gallium(III) iodide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Indium(III) iodide or indium triiodide is a chemical compound of indium and iodine with the formula InI₃.

Preparation[]

Indium(III) iodide is obtained by evaporation of a solution of indium in HI.^[1]

Properties[]

Distinct yellow and a red forms are known. The red form undergoes a transition to the yellow at 57 °C. The structure of the red form has not been determined by X-ray crystallography, however spectroscopic evidence indicates that indium may be six coordinate.^[2] The yellow form consists of In₂I₆ with 4 coordinate indium centres.

Ball-and-stick model of the In₂I₆ molecule

References[]

^ E. Donges (1963). "Indium(III) Iodide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. 1. NY, NY: Academic Press. pp. 861–2.
^ Taylor M. J., Kloo L. A. Journal of Raman Spectroscopy 31, 6, (2000), 465

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[1] E. Donges (1963). "Indium(III) Iodide". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. 1. NY, NY: Academic Press. pp. 861–2.

[2] Taylor M. J., Kloo L. A. Journal of Raman Spectroscopy 31, 6, (2000), 465

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