Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 2, Issue 2, Pages 230-238Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.200600332
Keywords
chirality; crystal engineering; helical structures; host-guest systems; supramolecular chemistry
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Achiral molecules can form aggregates with chirality. This depends on the relative position of the molecules in other words, the tilt of the molecules (so-called supramolecular tilt chirality). In this paper, we describe supramolecular chirality appearing in a 2, column composed of symmetrical benzene molecules, which is formed in the host cavity of inclusion crystals of cholic acid. Moreover, we determined the handedness, that is, right or left, of the 21 helical column of benzene on the basis of the molecular tilt. Determination of the 2, helical handedness was performed on assemblies of other benzene derivatives in cholic acid crystals and benzene assemblies in other host frameworks selected from the Cambridge Structural Database. Finally, we demonstrated complementarity of the handedness between the 2, symmetrical host framework of cholic acid and the benzene column.
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