The synthesis, structures and properties of a remarkable new class of discrete self-?assembled molecules, which feature both lanthanide (4f) and d-?block transition metals will be described. The use of specifically designed ligands results in the formation of cage-?like supramolecular architectures which possess drum or barrel like structures. The ligands 'L' are derived from a Schiff-?base ligand of the 'salen' type but which contain 5 or more methylene (CH2) units in the backbone linking the metal binding N,?O terminals. The compounds were structurally characterized by single crystal x-?ray diffraction studies and their photophysical properties investigated. So far the compounds feature stoichiometries in which there is a Ln:Tm ratio of 1:3 (Ln = lanthanide ion; Tm = d-?block transition metal)?. Examples include [Ln8Cd24L12(OAc)?48] and [Ln6Cd18L9Cl9(OAc)?27].

Synthesis and design of supramolecular self-?assembled lanthanide cages

247th National Meeting (2014)

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