A molecular association in which a host provides a binding site or cavity for a guest. Its equilibrium constant includes solvent and entropy contributions, not only direct host–guest attraction.
A molecular host with a three-dimensional cavity enclosed by several covalently connected donor-bearing bridges.
A cyclic polyether host that can coordinate cations with inward-directed oxygen donors. Selectivity depends on donor arrangement, solvent and guest size, not ring size alone.
A fifteen-membered crown with one nitrogen donor and four oxygen donors; nitrogen substitution can attach a signaling group.
A cyclic oligosaccharide host with a hydroxyl-rich exterior and a relatively nonpolar cavity. Different ring sizes recognize different organic guests through reversible inclusion. This node concerns its supramolecular chemistry.
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