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Figure 12
Examples of a head-to-tail disorder of case I. (a), (b) p-Chloro­nitro­benzene, chemical formula and superposition of the two molecular orientations in the crystal structure; space group P21/a, Z = 2, molecular site symmetry [\bar 1] (Thomas et al., 2008BB38). (c), (d) 4-Fluoro­biphenyl, chemical formula and superposition of the two molecular orientations in the crystal structure; space group P 21/b 2/c 21/n, Z = 4. The long molecular axis coincides with the crystallographic twofold axis. The occupancies of the fluoro positions are 0.789 and 0.211 (Guzei et al., 2017BB13).

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 76| Part 3| June 2020| Pages 353-365
https://doi.org/10.1107/S2052520620003984
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