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Figure 5
Single-crystal X-ray structures showing 2D halogen-bonded sheets, layers and TE axes for (a) and (b) olefin-I, (c) and (d) olefin-Br, and (e) and (f) olefin-I Br. Type-II halogen bonds are shown with yellow dashed lines, type-I halogen bonds are shown with blue dashed lines and C—H⋯X forces are shown with green dashed lines. Structures are shown at 290 K for olefin-Br and olefin-I Br, and 270 K for olefin-I (due to poor data quality at 290 K).

IUCrJ
Volume 9| Part 1| January 2022| Pages 31-42
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521009593