Adaptable metal cluster block: Facile construction of photoluminescent CuI coordination polymeric clusters with metal (I) iodides

Solution reaction of Cull) iodide with organic multifunctional ligands generated two different structure motifs: OD cluster [(CuI)(2)(dpdS)(2)] 1 (dpds = 2,2'-dipyridyldisulfide), and 1D polymer [(CuI)(bbbm)](n) 2 (bbbm = 1,1'-(1,4-butanediyl)bis-1H-benzimidazole). Both compounds contain the flexible rhomboid Cu2I2 cluster unit. The solution-state luminescence spectra showed that the high-energy emission may be associated with a metal-to-ligand [Cu -> pi*(pyridine)] or ligand-to-ligand [I- -> n*(pyridine)] charge-transfer excited state. (c) 2006 Elsevier B.V. All rights reserved.