Controllable assemblies of Cd(II) supramolecular coordination complexes based on a versatile tripyridyltriazole ligand and halide/pseduohalide anions

Four interrelated coordination supramolecular complexes have been assembled from CdX2 (X = Cl−, Br−, I− or I−/SCN−) and 3-(2-pyridyl)-4-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole, in which the anions and organic linker take diverse coordination modes. All these complexes show solid-state fluorescent emissions at room temperature.