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λ 5 ‐Phospha[7]helicenes: Synthesis, Properties, and Columnar Aggregation with One‐Way Chirality
Author(s) -
Nakano Koji,
Oyama Hiromi,
Nishimura Yoshio,
Nakasako Satoshi,
Nozaki Kyoko
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201106157
Subject(s) - helicene , chirality (physics) , enantiomer , phosphole , dipole , scheme (mathematics) , crystallography , physics , chemistry , computer science , stereochemistry , mathematics , organic chemistry , quantum mechanics , molecule , chiral symmetry , quark , mathematical analysis , nambu–jona lasinio model
One‐way street : A new family of λ 5‐ phospha[7]helicenes which form one‐dimensional columnar stacks in the solid state were synthesized (see scheme). Neighboring stacks have opposite dipole directions and, in the case of the racemic phosphole sulfide based helicene, columns with a given dipole direction consist of one enantiomer, whereas columns with the opposite dipole direction consist of the other enantiomer.