title: Supramolecular-tilt-chirality on twofold helical assemblies.
abstract: A twofold helix (2(1) helix) is an essential motif in approximately 70% of organic crystals. Although handedness of 2(1) helix has not been discussed from a mathematical viewpoint, we noticed that the handedness can be defined by considering the molecular shape and manner of assembly. Herein we propose the supramolecular-tilt-chirality (STC) method to define the handedness, and illustrate it by way of some examples. We believe that establishment of the systematic rules for supramolecular chirality will contribute to the progression of supramolecular chemistry and material science.
authors: Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. hisaki@mls.eng.osaka-u.ac.jp
authors: Ichiro
authors: I
authors: Hisaki
authors: Toshiyuki
authors: T
authors: Sasaki
authors: Norimitsu
authors: N
authors: Tohnai
authors: Mikiji
authors: M
authors: Miyata
mesh_terms: D001647:Bile Acids and Salts / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D046911:Macromolecular Substances / Q000737:chemistry*; D008958:Models, Molecular; D011083:Polycyclic Compounds / Q000737:chemistry*; D017433:Protein Structure, Secondary; D013237:Stereoisomerism
chemical_list: D001647:Bile Acids and Salts; D046911:Macromolecular Substances; D011083:Polycyclic Compounds