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Figure 1
The succinimide–2,4-dihydroxybenzoic acid (SM–24DHBA) co-crystal (Moragues-Bartolome et al., 2012BB40). The structure shows acid-flanked imide homodimers (Thomo units, Fig. 2[link]) propagated by hydroxyl–carbonyl hydrogen bonds (dotted lines) involving the para-hydroxyl group of 24DHBA. We designate this as polymorph I, with polymorph II reported herein.

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