par Lavendomme, Roy 
Référence Macrocyclic and Supramolecular Chemistry Early Career Researchers Meeting (3rd: 2019: Lincoln, United Kingdom)
Publication Non publié, 2019
Référence Macrocyclic and Supramolecular Chemistry Early Career Researchers Meeting (3rd: 2019: Lincoln, United Kingdom)
Publication Non publié, 2019
Communication à un colloque
| Résumé : | Most supramolecular assemblies involving palladium(II) revolve around the use of two to four pyridyl-based ligands coordinated to the palladium center. As one of the rare exceptions, we previously described the self-assembly of anilines, 2,6-diformylpyridine and Pd(II) to form covalent macrocycles, (pseudo)rotaxanes and catenanes. The 2,6-bis(imino)pyridyl tridentate motif present in these assemblies binds Pd(II) while leaving one free coordination site which can accommodate a mono-dentate ligand. We have now used the 2,6-bis(imino)pyridyl-Pd(II) motif as a building block in the self-assembly of covalent macrocycles and cages. The binding of multi-topic ligands to the free coordination sites in these assemblies could be used to control product size. Multi-topic ligands also bridged metallomacrocycles to form higher-order supramolecular assemblies. Furthermore, we developed an efficient method to reduce the imine bonds to secondary amines, leading to fully organic covalent macrocycles and cages, which were inaccessible through other means. |
