SELF-ASSEMBLY AND HOST-GUEST BEHAVIORS OF A SUPRAMOLECULAR HELICATE FEII 2L3

A novel helicate complex [(Fe2L3)-L-II](4+) resulted from subcomponent self-assembly of a C-3-symmetric triamine, 2-formylpyridine and octahedral iron(II) in CH3CN, which was confirmed by ESI-MS measurement. After the addition of selected planar aromatic molecules in CD3CN solution, shifts of H-1 NMR signals of the helicate were investigated. The results revealed that the size, functional group and symmetry of guest molecules remarkably influence the interaction patterns.