Aluminum+Iodide

Aluminium iodide is employed as a catalyst to break certain kinds of C-O and N-O bonds. It cleaves aryl ethers and deoxygenates epoxides. The name "aluminium iodide" is widely assumed to describe the triiodide or its dimer. In fact, a monoiodide also enjoys a role in the Al-I system, although composition AlI is unstable at room temperature with respect to the triiodide[3home] 3 AlI → AlI 3 + 2 Al An illustrative derivative of aluminium monoiodide is the cyclic adduct formed with triethylamine, AI 4 I 4 (NEt 3 ) 4.
 * Aluminium iodide** is any chemical compound containing only aluminium and iodine. Invariably, the name refers to a compound of the composition AlI 3, formed by the reaction of aluminium and iodine 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. As for the related chloride and bromide, AlI3is a strong Lewis acid and should be protected from the atmosphere. It has a boiling point of 236 degrees C, and a melting point of 187 degrees C.
 * Applications in organic synthesis **
 * Aluminium(I) iodide **

Hydrolysis of aluminium triodide will release some HI, which is corrosive. Lewis acids are skin irritants.