Structures and Solid‐State Dynamics of One‐Dimensional Water Chains Stabilized by Imidazole Channels

Abstract

Proton wires: One-dimensional water chains play an important role in proton permeation through transmembrane proteins. The X-ray crystal structures as well as solid-state 2H and 17O NMR and calorimetry studies of two imidazole hydrates that stabilize infinite one-dimensional water chains are reported (see picture; N blue, O red, H white). The 2H NMR spectroscopic studies suggest that water molecules in both compounds undergo different reorientational dynamics.