Porous organic hydrate crystals: structure and dynamic behaviour of water clusters

Abstract

4-Nitrostyrylpyridine hydrochloride forms porous crystals stabilized by cation–π and NO₂⋯Cl⁻ interactions that involve water clusters with a T5(2) motif in the channels. The crystals reversibly release and re-uptake water molecules. Solid-state ¹⁷O NMR spectroscopic analyses revealed the behaviour of the water molecules present in the channels.