Aluminium iodide

chemical compound

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.

Aluminium iodide
Names
Preferred IUPAC name
Aluminium iodide
Other names
Aluminium(III) iodide

Aluminum iodide
Aluminium triiodide

Aluminum triiodide
Identifiers
  • 7784-23-8 (anhydrate) checkY
  • 10090-53-6 (hexahydrate) checkY
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.140
EC Number
  • 232-054-8
UN number UN 3260
  • I[Al](I)I
  • dimer: I[Al-]1(I)[I+][Al-]([I+]1)(I)I
Properties
, (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]
very soluble, partial hydrolysis
Solubility in alcohol, ether soluble (hexahydrate)
Structure
Monoclinic, mP16
P21/c, No. 14
a = 1.1958 nm

, b = 0.6128 nm

, c = 1.8307 nm
α = 90°, β = 90°, γ = 90°


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).
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Infobox references

Sources change

  1. 1.0 1.1 1.2 1.3 1.4 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.45. ISBN 1439855110.
  2. 2.0 2.1 Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds, Second Edition. CRC Press. p. 8. ISBN 978-1-4398-1462-8.
  3. G. W. Watt, J. L. Hall (1953). Inorganic Syntheses. Vol. IV. pp. 117–119.