Hollow Six-Stranded Helical Columns of a Helicene

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 stru...

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Bibliographic Details
Published in:	Angewandte Chemie (International ed.) Vol. 48; no. 42; pp. 7837 - 7840
Main Authors:	Shcherbina, Maxim A, Zeng, Xiang-bing, Tadjiev, Timur, Ungar, Goran, Eichhorn, S.H, Phillips, Karen E.S, Katz, Thomas J
Format:	Journal Article
Language:	English
Published:	Weinheim Wiley-VCH Verlag 01-01-2009 WILEY‐VCH Verlag
Subjects:	chirality columnar phases liquid crystals Molecular Dynamics Simulation Molecular Structure Naphthoquinones - chemistry Polycyclic Compounds - chemistry Quinones - chemistry racemic mixtures Scattering, Radiation Thiophenes - chemistry X-Rays X‐ray diffraction
Online Access:	Get full text
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Summary:	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.
Bibliography:	http://dx.doi.org/10.1002/anie.200903658 G.U. acknowledges the financial support from EPSRC and the ESF Eurocores SONS2 project SCALES. S.H.E. thanks NSERC and CFI/OIT for financial support. We thank Drs. G. Grossmann and N. Terrill for their help in setting up the experiments at Daresbury and Diamond, and Prof. S. Z. D. Cheng of Akron University for density measurements. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1433-7851 1521-3773
DOI:	10.1002/anie.200903658