The synthesis of five new cyclotriveratrylene derivatives with 4-pyridyl side arms is reported, along with the crystal structures of three of these. Three ligands with extended 4-pyridylphenyl side arms and a ligand derived from cyclotriphenolene have been shown to form [Pd6L8]12+ stella octangula assemblies using diffusion-ordered spectroscopy NMR and electrospray MS techniques. This confirms the generality of the stella octagula assembly, providing that the ligand arms show a degree of rigidity. The more flexible ether-linked ligand tris(4-pyridylmethyl)cyclotriguaiacylene forms a smaller [Pd3L4]6+ bowl-shaped assembly in the solid state and in solution. The previously reported ligand tris(4-pyridylmethylamino)cyclotriguaiacylene forms a similar assembly in solution.
Tripodal 4-Pyridyl-Derived Host Ligands and Their Metallo-Supramolecular Chemistry: Stella Octangula and Bowl-Shaped Assemblies
Ronson, Tanya K., Carruthers, Christopher, Fisher, Julie, Brotin, Thierry, Harding, Lindsay P., Rizkallah, Pierre J. and Hardie, Michaele J.
(2010)
Tripodal 4-Pyridyl-Derived Host Ligands and Their Metallo-Supramolecular Chemistry: Stella Octangula and Bowl-Shaped Assemblies.
Inorganic Chemistry, 49 (2).
pp. 675-685.
ISSN 00201669
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