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Relationship between the Infrared Rotatory Dispersion of Liquid‐Crystalline Solutions of Chiral Molecules and Their Absolute Configuration
Author(s) -
Krabbe Hans Jürgen,
Heggemeier Heinrich,
Schrader Bernhard,
Korte ErnstHeiner
Publication year - 1977
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197707911
Subject(s) - absolute configuration , sign (mathematics) , molecule , liquid crystal , dispersion (optics) , optical rotatory dispersion , dissolution , infrared , materials science , crystallography , chemistry , stereochemistry , circular dichroism , optics , organic chemistry , physics , mathematics , optoelectronics , mathematical analysis
The absolute configuration of molecules with a chiral center can be established by a new empirical procedure: nematic phases of liquid‐crystalline compounds become cholesteric on dissolution of a chiral “guest substance”. The sign of the measured Reflection Cotton Effect provides information whether the three ligands of greates priority a > b > c (see priority scheme) are arranged clockwise or counterclockwise.