Supramolecular reactions of metallo-architectures: Ag-double-helicate/Zn-grid, Pb-grid/Zn-grid interconversions, and Ag-double-helicate fusion.

Supramolecular reactions are of importance in many fields. We report herein three examples where complexes of hydrazone-based ligands are involved. A Ag-double-helicate was converted, by treatment with Zn(OTf), into a Zn-grid (exchange of metal ions and change of the nature of the initial complex). A Pb-grid was converted, upon reaction with ZnCl or ZnBr, into a Zn-grid (exchange of metal ions, but conservation of the nature of the initial complex). The reverse conversions were also achieved. The fusion of a Ag-double-helicate with another Ag-double-helicate was performed (exchange of ligands, but conservation of the nature of the complexes) and resulted in a mixture of three helicates (two homostranded ones and one heterostranded one).