Separation of lutidines by enclathration

Three related diol host compounds have been employed to separate lutidine isomers. Thirteen equimolar mixtures of the isomers were enclathrated by each of the host compounds in turn, and the results monitored by NMR. When the selectivity was poor, crystal structures of the host compounds with each o...

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Bibliographic Details
Published in:CrystEngComm 2015-01, Vol.17 (43), p.8332-8338
Main Authors: Samipillai, Marivel, Batisai, Eustina, Nassimbeni, Luigi R., Weber, Edwin
Format: Article
Language:English
Subjects:
Crystal structure
Diols
Isomers
Nuclear magnetic resonance
Selectivity
Separation
Trends
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Summary:Three related diol host compounds have been employed to separate lutidine isomers. Thirteen equimolar mixtures of the isomers were enclathrated by each of the host compounds in turn, and the results monitored by NMR. When the selectivity was poor, crystal structures of the host compounds with each of the single isomers and their mixture, were elucidated. By appropriate use of the three host molecules, it proved possible to separate each isomer. The selectivity trend is 2,3-LUT ≈ 3,4-LUT > 2,5-LUT > 2,4-LUT > 2,6-LUT.
ISSN:1466-8033
1466-8033
DOI:10.1039/C5CE01637A