Al3+ solvation in solutions of aluminum nitrate in a protic ionic liquid: Nuclear magnetic resonance verification of the solvation shell composition

The closest environment of Al3+ cations was analyzed in detail in solutions of aluminum nitrate in the prototypical protic ionic liquid ethyl ammonium nitrate (EAN) using H-1 and N-14 nuclear magnetic resonance (NMR) spectra. For Al (NO3)(3)-EAN mixtures with different water content, a quantitative analysis of the integral intensities of the H-1 and N-14 signals was carried out and the composition of the first solvation shell of the aluminum cation was refined.