Molecular Packing and Hydrogen Bonding in the Crystal Structures of theN-(n-Alkyl)-D-gluconamide and the 1-Deoxy-(N-methyl-alkanamido)-D-glucitol Mesogens

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Abstract
Despite differences in molecular configuration and crystal symmetry, the crystal structures of the odd and even alkyl chain members of the N-(n-alkyl-D-gluconamides and the odd alkyl chain members of the 1-deoxy-(N-methyl alkanamido)-D-glucitols have closely related hydrogen-bond systems, which include a homodromic four-bond cycle. This is associated with the monolayer head-to-tail molecular packing common to these crystal structures.