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

Magn Reson Chem. 2022 Feb;60(2):221-225. doi: 10.1002/mrc.5220. Epub 2021 Oct 6.

Abstract

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 1 H and 14 N nuclear magnetic resonance (NMR) spectra. For Al (NO3 )3 -EAN mixtures with different water content, a quantitative analysis of the integral intensities of the 1 H and 14 N signals was carried out and the composition of the first solvation shell of the aluminum cation was refined.

Keywords: 14N; 1H; 27Al; NMR; aqua complex; ionic liquid; solvation shell.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Compounds / chemistry
  • Ionic Liquids* / chemistry
  • Magnetic Resonance Spectroscopy
  • Nitrates

Substances

  • Aluminum Compounds
  • Ionic Liquids
  • Nitrates
  • aluminum nitrate