Selectivity and structure of mixed guest clathrates
This study investigates the selectivity of two organic host molecules towards pairs of guest molecules and in particular describes the crystal structures of the mixed guest clathrates obtained in selectivity studies. The diol organic host compounds 9,9′-(biphenyl-4,4′-diyl)difluoren-9-ol (H1) and 9,9′-(ethyne-1,2-diyl)difluoren-9-ol (H2) investigated in this study were found to show interesting selectivities (determined via competition experiments) towards THF vs. Et2O and EtOH vs. MeCN, respectively. The crystal structures of the single guest inclusion compounds were elucidated and compared and in addition the crystal structures of the inclusion compounds containing mixed guests were studied and in each case could be correlated with the selectivity profiles. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.