Tris(2-aminoethyl)amine (tren)-based bulky adamantane group-substituted tris-urea (L) has been developed as the potential tripodal receptor exhibiting strong binding affinities towards small spherical fluoride anion as well as large tetrahedral sulphate anion in its neutral and protonated form, respectively. Structural elucidation reveals that the divalent sulphate ion is fully engulfed inside the complementary space created by two face-to-face oriented symmetry-independent protonated receptors, whereas the smaller fluoride ion is encapsulated as fluoride-water cluster (F--H2O) assemblage within the neutral unimolecular capsular assembly of receptor L.
Volume 132, 2020
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode