Al solvation in solutions of aluminum nitrate in a protic ionic liquid: Nuclear magnetic resonance verification of the solvation shell composition.

The closest environment of Al cations was analyzed in detail in solutions of aluminum nitrate in the prototypical protic ionic liquid ethyl ammonium nitrate (EAN) using H and N nuclear magnetic resonance (NMR) spectra. For Al (NO ) -EAN mixtures with different water content, a quantitative analysis of the integral intensities of the H and N signals was carried out and the composition of the first solvation shell of the aluminum cation was refined.