Star-Burst Prisms with Cyclotriveratrylene-Type Ligands: A [Pd6L8] Stella Octangular Structure

摘要

Cyclotriveratrylene (CTV) is a macrocyclic host molecule with a shallow molecular cavity and a distinctly spiked, pyramidal shape. CTV and/or its derivatives have application as molecular hosts, as precursors to cryptophanes and extended-arm cavitands, as components in hydrogen-bonded or coordination networks, and as ligands within 3D capsular or prismatic metallo-supramolecular assemblies. In this last area the bowl shape of a CTV derivative provides a convergent binding mode and such ligands can form assemblies with greater internal volumes than could a corresponding planar analogue. Furthermore, the CTV-type ligands impart embedded molecular recognition sites within the assemblies, and it has been shown that simple host-guest interactions at these sites can have a directing influence on the overall self-assembly process.