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Figure 13
The structure of the 1:2 GM–4HBA co-crystal. Non-planar Thomo-II units are formed by N—H⋯O dimers between symmetry-independent GM molecules (shown in different colours). Acid homodimers between independent 4HBA molecules are connected through O—Hhydroxy⋯O=Cimide interactions. Dotted lines indicate hydrogen bonds.

IUCrJ
Volume 2| Part 3| April 2015| Pages 341-351
ISSN: 2052-2525
doi:10.1107/S2052252515002651