Properties of aluminum trichloride solutions in liquid SO2: Formation of the SOCl+ cation

✍ Scribed by Jacques-Emile Dubois; Michel Delamar; Pierre-Camille Lacaze

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 434 KB
• Volume: 25
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(80)87033-2

✦ Synopsis

The addition of AICI, to liquid SO, yields anhydrous solutions in which the stability ofcationic species such as the 9,lGdiphenylanthracene dication is shown to be considerably increased. Aluminum trichloride solutions are also conductive and are oxidizing agents. The strong solubitity of AiCI, appears to be anomalous when compared to that ofother compounds made of a hard Lewis acid and a hard Lewis base and is probably due to a reaction with the solvent. The reaction : SO, + AICI, FL SOCl+ + AIOCI, giving rise to the oxidizing and electrophitic SOCl* cation accounts for the properties of AICI, solutions, particularly their sulfinating power towards benzene.