bistriflate salt of racemic [5]helquat 1 was found to form a conglomerate. Based on this finding, the preferentialcrystallization of this chiral helicene–viologenhybrid was developed to deliver pure enantiomers on a 20gscale (10.5 g of each enantiomer). To the best of our knowledge, this is the largest amount of nonracemic helicene-like compound obtained by preferentialcrystallization to date. The absolute