Potential facile separation strategy for mixtures of 3- and 4-methylpyridine by employing N,N′-bis(9-phenyl-9-xanthenyl)ethylenediamine as an alternative host compound

Selectivity considerations of host compound trans-9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboxylic acid when presented with pyridine and picoline mixtures: charge-assisted versus classical hydrogen bonding

Stereoview showing strong intermolecular charge-assisted hydrogen bonds between host, and host and guest, molecules accounting for the host preference for 2MP (and 3MP). Disfavoured guests PYR and 4MP experienced only weaker classical hydrogen bonding interactions.