Front Cover: The Influence of Deuterium Isotope Effects on Structural Rearrangements, Ensemble Equilibria, and Hydrogen Bonding in Protic Ionic Liquids (ChemPhysChem 23/2022)

The Front Cover illustrates the isotope effects for the protic ionic liquid (PIL) triethylammonium methanesulfonate as explored by deuterium solid-state NMR spectroscopy. The 2H NMR line shape analysis provides deuteron quadrupole coupling constants, which are sensitive for hydrogen bonding and allow probing the characteristics of a broad heterogeneous phase. More information can be found in the Research Article by Daniil I. Kolokolov, Ralf Ludwig and co-workers.