Perylene-3,4,9,10-tetracarboxylic diimide (PDI) materials are highly interesting as electronic components and sensors, with strong absorption and luminescence, good electron donor properties and facile synthesis from amines and perylenetetracarboxylic dianhydride. Contorted conformations of the polycyclic core can be accessed by varying the patterning around the free 1,2,5,6,7,8,11,12-positions or the perylene component. The 319 crystal structures of PDI with identified coordinates were analyzed with SCSD (Fig. ).