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Updated: May 20, 2026
06:35
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Supramolecular-tilt-chirality on twofold helical assemblies
Ichiro Hisaki1, Toshiyuki Sasaki, Norimitsu Tohnai
1Department 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
Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 30, 2012
Summary
This study introduces a new method to define the handedness of twofold helices (2(1) helices) in organic crystals. The supramolecular-tilt-chirality (STC) method provides a mathematical approach to understand supramolecular chirality.
Area of Science:
- Crystallography
- Supramolecular Chemistry
- Organic Chemistry
Background:
- Twofold helices (2(1) helices) are prevalent structural motifs in approximately 70% of organic crystals.
- The concept of handedness for 2(1) helices lacks a standardized mathematical definition.
- Understanding supramolecular chirality is crucial for advancements in material science.
Purpose of the Study:
- To propose a novel, mathematically-based method for defining the handedness of 2(1) helices.
- To establish systematic rules for describing supramolecular chirality.
- To contribute to the progression of supramolecular chemistry and material science.
Main Methods:
- Development of the supramolecular-tilt-chirality (STC) method.
- Analysis of molecular shape and assembly patterns.
- Illustration of the STC method with relevant examples.
Main Results:
- A new method, supramolecular-tilt-chirality (STC), is proposed to define helix handedness.
- The STC method considers molecular shape and assembly for chirality determination.
- Examples demonstrate the application and effectiveness of the STC method.
Conclusions:
- The establishment of systematic rules for supramolecular chirality is proposed.
- The STC method offers a mathematical framework for understanding helix handedness.
- This work aims to advance supramolecular chemistry and material science through defined chirality rules.
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