Do all ionic liquids need organic cations? Characterisation of [AlCl2·nAmide]+ AlCl4− and comparison with imidazolium based systems

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Abstract
The addition of a simple amide to AlCl3 causes the formation of a liquid of the form [AlCl2·nAmide]+AlCl4 −. The material thus produced is liquid over a wide temperature range, is relatively insensitive to water and has the properties of an ionic liquid. This ionic liquid is shown to be a suitable medium for the acetylation of ferrocene and the electrodeposition of aluminium and demonstrated that quaternary ammonium cations are not always needed to form ionic liquids.

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