SELF-ASSEMBLY AND HOST-GUEST BEHAVIORS OF A SUPRAMOLECULAR HELICATE FE^II ₂L₃

A novel helicate complex [Fe^II₂L₃]⁴⁺ resulted from subcomponent self-assembly of a C₃-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 ¹H 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.

Keywords:
self-assembly; helicate complex; iron(II); host-guest chemistry