Control of relationship between conformational and color polymorphs of achiral 2-methyl-3-arylthio-1,4-naphthalenediones

The achiral compound 2-methyl-3-(4-bromophenylthio)-1,4-naphthalenedione shows conformational and color polymorphism. The relationship between the conformational and color polymorphs (chirality and color) of 2-methyl-3-arylthio-1,4-naphthalenediones can change according to the type of arylthio group.