Helical Assembly Formed by Chiral [11]Thiaheterohelicene Molecules in Crystals. Architecture with Triple Helix

Projection of the crystal structure of a P enantiomer of [11]thiaheterohelicene (11TH) with a helical structure of one and a half turns along the a axis revealed huge helical assemblies, in which three crystallographically independent molecules formed a smaller right-handed helix, no similar helical assembly being observed for the crystal structures of an 11TH racemate and a [9]thiaheterohelicene enantiomer.