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Aluminium iodide
Aluminium-iodide-3D-balls.png
Jodid hlinitý.PNG
Other names Aluminium(III) iodide

Aluminum iodide
Aluminium triiodide
Aluminum triiodide

Identifiers
CAS number 7784-23-8
PubChem 82222
EC number 232-054-8
SMILES I[Al](I)I
Properties
Molecular formula AlI3, AlI3·6H2O (hexahydrate)
Molar mass 407.695 g/mol (anhydrous)
515.786 g/mol (hexahydrate)
Appearance white (anhydrous) or yellow powder (hexahydrate)
Density 3.98 g/cm3 (anhydrous) 2.63 g/cm3 (hexahydrate)
Melting point

188.28 °C, 461 K, 371 °F

Boiling point

382 °C, 655 K, 720 °F

Solubility in water very soluble, partial hydrolysis
Solubility in alcohol, ether soluble (hexahydrate)
Structure
Crystal structure Monoclinic, mP16
Space group P21/c, No. 14
Lattice constant a = 1.1958 nm, b = 0.6128 nm, c = 1.8307 nm
Thermochemistry
Std enthalpy of
formation ΔfHo298
-302.9 kJ/mol
Standard molar
entropy So298
195.9 J/(mol·K)
Specific heat capacity, C 98.7 J/(mol·K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Aluminium iodide is any chemical compound made up of only aluminium and iodine. It is formed by the reaction of aluminium and iodine, or the action of hydrogen iodide on aluminium metal.

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