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Figure 6
(a) ACM–PABA. (a) Previously reported structure (Sanphui et al., 2014BB26). (b) SDPD crystal structure with better precision C=O and C—O distance for the COOH group (this paper). (c) Bond lengths of the ACM carboxylic acid group mean that the heterodimer of COOH groups and N—H⋯O H bonds are present in ACM–PABA. The unit-cell parameters are similar indicating no polymorphism.

IUCrJ
Volume 4| Part 3| May 2017| Pages 206-214
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517002305