Studies on systems of salts and mixed solvents 35—27 Al NMR investigations of AlCl3‐water‐N,N‐dimethylformamide solutions using the solid‐state MAS technique

Abstract

AbstractConventional liquid‐state 27Al NMR spectra of concentrated solutions of the AlCl3‐water‐N,N‐dimethyl‐N‐Dimethylformamide formamide system contain comparatively broad non‐structured lines. Application of MAS leads to a reduction in the line width and a structuring of the spectra. This allowed the experimental determination of the chemical shifts of [Al(H2O)6−x(DMF)x]3+ (x = 0−6) mixed‐ligand complexes. The investigations demonstrate an example of the applicability to liquids of the NMR MAS technique, which was originally developed for solids. They underline the existence, in a reduced form, of ‘solid‐type’ interactions within the investigated solutions.