The racemic structures show more variation in packing behaviour, where interlocked chains are not formed in any of the low energy polymorphs. Instead a herringbone-type packing is seen in structures where n = 3, 5 and adjacent translational chains are seen in naphthalene and [6]helicene. The polymorph of [4]helicene is very similar to the enantiopure [5]helicene. [7]helicene is the only molecule that contains motifs similar to the interlocked enantiopure helicenes, as the helicenes pack in the same back-to-back manner, whereas [8],