Aluminium iodide - Simple English Wikipedia, the free encyclopedia

Aluminium iodide

Names
Preferred IUPAC name Aluminium iodide
Other names Aluminium(III) iodide Aluminum iodide Aluminium triiodide Aluminum triiodide
Identifiers
CAS Number	7784-23-8 (anhydrate) Y 10090-53-6 (hexahydrate) Y
3D model (JSmol)	Interactive image dimer: Interactive image
ChemSpider	74202 (anhydrate) Y
ECHA InfoCard	100.029.140
EC Number	232-054-8
PubChem CID	82222 (anhydrate)
UN number	UN 3260
CompTox Dashboard (EPA)	DTXSID0064838
SMILES I[Al](I)I dimer: I[Al-]1(I)[I+][Al-]([I+]1)(I)I
Properties
Chemical formula	${\displaystyle AlI_{3}}$, ${\displaystyle AlI_{3}\cdot 6H_{2}O}$ (hexahydrate)
Molar mass	407.695 g/mol (anhydrous) 515.786 g/mol (hexahydrate)[1]
Appearance	white (anhydrous) or yellow powder (hexahydrate)[1]
Density	3.98 g/cm3 (anhydrous)[1] 2.63 g/cm3 (hexahydrate)[2]
Melting point	188.28 °C (370.90 °F; 461.43 K) (anhydrous) 185 °C, decomposes (hexahydrate)[1][2]
Boiling point	382 °C (720 °F; 655 K) anhydrous, sublimes[1]
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 α = 90°, β = 90°, γ = 90°
Formula units (Z)	8
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 otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Aluminium iodide is any chemical compound made up of only aluminium and iodine. It is formed by the reaction of aluminium and iodine,^[3] or the action of hydrogen iodide on aluminium metal.

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