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Figure 15
One-dimensional chains in the crystal structures of tetrafluoro-4-iodophenol pyrazine-1-oxide (A1 = best acceptor, A2 = second-best acceptor, H = hydrogen-bond donor, X = halogen-bond donor).

IUCrJ
Volume 2| Part 5| September 2015| Pages 498-510
ISSN: 2052-2525
https://doi.org/10.1107/S2052252515010854