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Title: Thermodynamic study on the gas chromatographic separation of the enantiomers of aromatic alcohols using heptakis(2,3-di-O-methyl-6-O-tert- butyldimethylsilyl)-β-cyclodextrin as a stationary phase
Authors: Aroonsiri Shitangkoon
Jirawit Yanchinda
Juwadee Shiowatana
Chulalongkorn University
Mahidol University
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry
Issue Date: 17-Sep-2004
Citation: Journal of Chromatography A. Vol.1049, No.1-2 (2004), 223-226
Abstract: Gas chromatographic separation of the enantiomers of nineteen structurally related aromatic alcohols was investigated as a function of temperature using a heptakis(2,3-di-O-methyl-6-O-tert-butyldimethylsilyl)-β-cyclodextrin- coated capillary column. Thermodynamic parameters were determined and compared with those obtained with the nonchiral, reference stationary phase, OV-1701. While the -ΔH and -ΔS values for the more retained enantiomers of all nineteen alcohols are comparable on the chiral stationary phase used, the -Δ(ΔH) and -Δ(ΔS) values are considerably different. Of all the solutes tested, enantiodiscrimination was the greatest for the 2,6-difluoro-α-methylbenzyl alcohol. © 2004 Elsevier B.V. All rights reserved.
ISSN: 00219673
Appears in Collections:Scopus 2001-2005

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