Hollow Six-Stranded Helical Columns of a Helicene (pages 7837–7840)
Maxim A. Shcherbina, Xiang-bing Zeng, Timur Tadjiev, Goran Ungar, S. H. Eichhorn, Karen E. S. Phillips and Thomas J. Katz
Article first published online: 8 SEP 2009 | DOI: 10.1002/anie.200903658
Do the twist: A helicenebisquinone (see formula), both enantiopure and racemic, forms hexagonal columnar phases in which the internal structures of the columns are 132 hollow helices comprising six-molecule repeat units (see axial and side views). The enantiopure compound forms a true hexagonal structure; the racemate segregates enantiomers into right and left helical columns that are interlocked and longitudinally displaced for optimal packing.