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Updated: Aug 7, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Unusual effects of separation conditions on chiral separations
1Bioanalytical Chemistry, AstraZeneca R&D Mölndal, Sweden. bengt-arne.persson@astrazeneca.com
Abstract:
Unusual effects in liquid chromatographic separations of enantiomers on chiral stationary phases are reviewed with emphasis on polysaccharide phases. On protein phases and Pirkle phases reversal of the elution order between enantiomers due to variation of temperature and mobile phase composition has been reported. Most of the nonanticipated observations have dealt with the widely used polysaccharide phases. Reversed retention order and other stereoselective effects have been observed by variation of temperature, organic modifier and water content in nonpolar organic mobile phases.
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