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Figure 3
The image on the left shows the unit cell of the two-dimensional model used in Example 1 with carbon atoms shown as black spots (for CIF file, see supporting information). The lattice parameter of the square unit cell (indicated by the light-blue frame) has been set to a = 3.089 Å, in order that the by dashed lines indicated in plane C—C distances agree with the average C—C single bond distance of 1.54 Å. The image on the right shows the corresponding calculated diffraction pattern with intensities proportional to the squares of the structure factors (a* = red, b* = green). Note that the inner eight strong diffraction spots resemble the diffraction pattern of a square unit cell formed by the four atoms in the model.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 82| Part 5| May 2026| Pages 534-543
https://doi.org/10.1107/S2056989026003300
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