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| Names | |
|---|---|
| Preferred IUPAC name
Aluminium iodide | |
| Other names
Aluminium(III) iodide
Aluminum iodide | |
| Identifiers | |
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3D model (JSmol)
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| ChemSpider |
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| ECHA InfoCard | 100.029.140 |
| EC Number |
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PubChem CID
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| UNII |
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| UN number | UN 3260 |
CompTox Dashboard (EPA)
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| Properties | |
| AlI3, AlI3·6H2O (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[3] | |
| Monoclinic, mP16 | |
| P21/c, No. 14 | |
a = 1.1958 nm, b = 0.6128 nm, c = 1.8307 nm α = 90°, β = 90°, γ = 90°
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Formula units (Z)
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8 |
| Thermochemistry[1] | |
Heat capacity (C)
|
98.7 J/(mol·K) |
Std molar
entropy (S⦵298) |
195.9 J/(mol·K) |
Std enthalpy of
formation (ΔfH⦵298) |
-302.9 kJ/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Aluminium iodide is a chemical compound containing aluminium and iodine. Invariably, the name refers to a compound of the composition AlI
3, formed by the reaction of aluminium and iodine[4] or the action of HI on Al metal. The hexahydrate is obtained from a reaction between metallic aluminum or aluminum hydroxide with hydrogen iodide or hydroiodic acid. Like the related chloride and bromide, AlI
3 is a strong Lewis acid and will absorb water from the atmosphere. It is employed as a reagent for the scission of certain kinds of C-O and N-O bonds. It cleaves aryl ethers and deoxygenates epoxides.[5]
- ^ a b c d e f Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.45. ISBN 1-4398-5511-0.
- ^ a b Perry, Dale L. (19 April 2016). Handbook of Inorganic Compounds, Second Edition. CRC Press. p. 8. ISBN 978-1-4398-1462-8.
- ^ Cite error: The named reference
TroyanovKrahl2004was invoked but never defined (see the help page). - ^ Watt, George W; Hall, James L; Taylor, William Lloyd; Kleinberg, Jacob (1953). "Aluminum Iodide". Inorganic Syntheses. Vol. 4. pp. 117–119. doi:10.1002/9780470132357.ch39. ISBN 9780470132357.
- ^ Gugelchuk, M. (2004). "Aluminum Iodide". In L. Paquette (ed.). Encyclopedia of Reagents for Organic Synthesis. New York: J. Wiley & Sons. doi:10.1002/047084289X.ra083. ISBN 0471936235.