Figure 5
The recurring stacking of four π systems in 1. The toluene–anthraquinone centroid–centroid distances are 3.85 Å. The anthraquinone–anthraquinone centroid–centroid distances are 3.82 Å (double dashed line) and 4.63 Å (single dashed line). Symmetry equivalent generated by −x, 1 − y, 1 − z. |