Characterization of a Planar Cyclic Form of Water Hexamer in an Organic Supramolecular Complex: An Unusual Self-Assembly of Bimesityl-3,3′-Dicarboxylic Acid

Abstract

Trapped water: Six molecules of water are trapped in the crystal lattice of an organic supramolecular complex with bimesityl-3,3′-dicarboxylic acid in the form of a planar cyclic “ring”, which is the basic structural motif of Ice II. The water molecules of the hexamer (see picture) are associated in the crystal lattice by eighteen OH⋅⋅⋅O hydrogen bonds.