Design, synthesis and solid state structural characterisation of a metallacyclophane formed by a diazadioxamacrocycle bearing two pyridines and silver(I) cation

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Upon functionalisation of 1,7-diaza-4,10-dioxacyclododecane 2 on both nitrogen atoms by two pyridine units using the para-position with respect to the nitrogen of the pyridine, the bismonodentate ligand 1 was obtained and structurally characterised in the solid state by X-ray diffraction on single-crystal. Under self-assembly condition, in the presence of AgPF 6, the above mentioned ligand 1 forms the macrotricyclic metallamacrocycle 4 composed of two ligands and two silver cations with linear coordination of both metal cations. The barrel type structure thus obtained was also characterised in the solid state by X-ray diffraction methods.