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Figure 2
Calculated variations in the bond lengths of isolated C6-PyDI upon oxidation (black symbols) and reduction (red symbols), the x axis represents the chemical bond (C—C, C—O and C—N) number that is marked using different numbers.

IUCrJ
Volume 6| Part 4| July 2019| Pages 603-609
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519004706