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Figure 5
(a) Molecular arrangement of ART form (II) at ambient conditions showing the unit-cell contents (Z = 4) coloured by symmetry equivalence. Blue circles highlight similar carbonyl groups on each of the molecules that help to indicate the pseudo-21 relationship between the molecules (red with yellow & blue with green). (b) The asymmetric unit coloured by element with exception of the carbonyl groups which are colour coded to link to Fig. 5[link](a). The curved arrows represent the pseudo twofold rotation where the red molecule rotates and translates (dotted line) to the yellow molecule forming the pseudo 21-screw axis.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 82| Part 3| June 2026| Pages 316-329
https://doi.org/10.1107/S205252062600291X
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