Determination of aluminium electronegativity in new ambient-temperature acidic molten salts based on 3-butyl-1-methylimidazolium chloride and ALEt3–xClx(x= 0–3) by 1H nuclear magnetic resonance spectroscopy

Abstract

Aluminium electronegativity in molten salts based on 3-butyl-1-methylimidazolium chloride and AlEtCl₂, AlEt₂Cl, AlEt₃ and mixtures of AlEtCl₂ and AlCl₃ has been determined by the modified Dailey–Shoolery equation using ¹H NMR spectroscopy. For Al to 3-butyl-1-methylimidazolium chloride molar ratios between 1 : 1 and 3 : 1 there is a linear relationship between the aluminium electronegativity of the anionic species present in the melts and the molar composition.