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Figure 4
Crystal packing of 2 when viewed along the b axis. The separation between the centroids of the middle rings (blue spheres) is slightly longer than that between the centroids of the middle and terminal rings (blue and orange spheres) in adjacent layers. Close contacts are also observed between equivalent carbon atoms in the terminal rings (shown in green) that are offset from each other. All lengths are in Å.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 73| Part 4| April 2017| Pages 539-542
https://doi.org/10.1107/S2056989017003863
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