3D Luminescent Copper(I) Iodide Coordination Polymer Based on Cu4I4 Clusters and an Ethyl‐bridging Bis(triazole) Ligand

Abstract The copper‐iodine based coordination polymer [Cu 4 I 2 (bmte)] n ( 1 ) [H 2 bmte = 1,2‐bis(5‐methyl‐1 H ‐1,2,4‐triazol‐3‐yl)ethane] was synthesized using cuprous iodide and a flexible 3‐substituted, ethyl‐bridging bis(triazole) ligand under solvothermal conditions. X‐ray diffraction analysis reveals that compound 1 shows a 3D framework containing Cu 4 I 4 clusters and alternating left‐ and right‐handed [Cu(triazole)] helices, which result in a (4,8)‐connected fluorite (flu) topological network. Moreover, compound 1 exhibits orange phosphorescence with the emission maxima at 590 nm in the solid state at room temperature.