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Figure 1
Representation of ϕ1 and ϕ2 dihedral angles in the schematic diagram of naphthalene and octahalonaphthlene.

IUCrJ
Volume 4| Part 1| January 2017| Pages 37-49
ISSN: 2052-2525
https://doi.org/10.1107/S205225251601808X