Crystallisation temperature control of stoichiometry and selectivity in host–guest compounds

The host H, 9,9′-(ethyne-1,2-diyl)bis(fluoren-9-ol), has been employed to study its selectivity towards the close boiling alcohol pair, 2-propanol and tertiary butanol. H is selective for tertiary butanol at low temperatures, but includes both guests without discrimination at high temperatures. Conc...

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Bibliographic Details
Published in:CrystEngComm 2017, Vol.19 (39), p.5892-5896
Main Authors: Sykes, Nicole M., Su, Hong, Weber, Edwin, Bourne, Susan A., Nassimbeni, Luigi R.
Format: Article
Language:English
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Summary:The host H, 9,9′-(ethyne-1,2-diyl)bis(fluoren-9-ol), has been employed to study its selectivity towards the close boiling alcohol pair, 2-propanol and tertiary butanol. H is selective for tertiary butanol at low temperatures, but includes both guests without discrimination at high temperatures. Concomitantly higher guest/host ratios were observed at lower temperatures, in agreement with the literature. The kinetics of solid–host: guest–vapour enclathration was successfully measured by powder X-ray diffraction.
ISSN:1466-8033
1466-8033
DOI:10.1039/C7CE01414G