Royal Society of Chemistry, Chemical Communications, 94(54), p. 13208-13211, 2018
DOI: 10.1039/c8cc07301e
Full text: Unavailable
Despite competing trends and computational predictions to the contrary, three bis-urea receptors bind disparate oxoanions (ClO4−, HSO4−, H2PO4−) with equal affinities in a non-polar solvent; in a more polar solvent the trend in association constants for one receptor matches that of the pKb of the guest, as expected for H-bond donating hosts.