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Figure 5
(a) The supramolecular structures of the macrocycles {[Fe(C5H4–C5H4N)2]·[HOOC(CH2)nCOOH]}2 [n = 4 (a), 6 (b), 7 (c), 8 (d)]; (b) the zigzag chain found when n = 5.

IUCrJ
Volume 4| Part 4| July 2017| Pages 369-379
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517005917