Synthesis and crystal structure of a luminescent infinite 2D brick-wall network with two- and three-coordinate silver(I) atoms and ligand-unsupported silver-silver interactions

Assembly of a novel flexible tetradentate ligand 1,7-bis(4'-pyridyl)-2,6-diazaheptane (py-hep) with silver perchlorate hydrate provides an interesting two-dimensional (2D) brick-wall network: [Ag-3(py-hep)(2)](ClO4)(3).0.5CH(3)CN. The X-ray crystal structural analysis indicates that the framework consists of trigonal and linearly coordinated silver(I) atoms and ligand-unsupported metal-metal interactions. The complex shows photoluminescence in both the solid state and in acetonitrile solution.