Supramolecular design of the trinuclear silver(I) and copper(I) metal pyrazolates complexes with ruthenium sandwich compounds via intermolecular metal−π interactions

The interaction of copper(I) and silver(I) macrocyclic pyrazolates with aromatic ligands of ruthenium sandwiches (Cp*RuInd, CpRuInd, and Ind2Ru) in solution is shown for the first time. The similar mode of coordination of macrocycles to the C6 fragment of indenyl ligand was found both in the solution and in the solid state. Complexation of macrocycles with the nonencumbered sandwiches (CpRuInd, Ind2Ru) leads to the formation of infinite stacks via alternating molecules of macrocycles and sandwich compounds as one-dimensional coordination polymers with a regular structure. Coordination mode of the indenyl ligand is independent of the second part of the ruthenium sandwich as well as of the aromatic ligand coordinated to another face of the macrocycle. The general principle of macrocycle supramolecular packing suggests coordination of two ligands on both faces of the macrocycle. © 2017 American Chemical Society.