Tetra amido macrocyclic ligand

Chemical structure of a tetra amido macrocyclic ligand... 

In a different approach to the design of a two-electron redox system, we appended the ferrocene firagment to a tetra-aza macrocode (a further example of an LrX system) the functionalized ligand should incorporate a d metal centre and should promote its redox activity. The tetra-aza macrocycle we have chosen is dioxocyclam, 9. This ligand, which can be prepared throu reaction of diethylmalonate with 2.3.2-tet, on addition of 2 eqmvalents of a strong base incorporates in aqueous solution a Cu ion, with simtdtaneous extrusion of two protons from the two amido groups [19]. 

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