Abstract
A new crystal-engineering motif has been developed where a ditopic receptor 1 shows a novel syn– syn hydrogen-bonded polymeric supramolecular complex (Fig. 4b) (instead of a 1:1 dimeric syn– syn or polymeric syn– anti complex) giving rise to a hydrogen-bonded stair-like polymeric ribbon structure between the binding groups of the receptor pyridine amide and the carboxyl groups of the guest substrate.
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