Abstract
Solution reaction of Cu(I) iodide with organic multifunctional ligands generated two different structure motifs: 0D cluster [(CuI) 2(dpds) 2] 1 (dpds = 2,2′-dipyridyldisulfide), and 1D polymer [(CuI)(bbbm)] n 2 (bbbm = 1,1′-(1,4-butanediyl)bis-1 H-benzimidazole). Both compounds contain the flexible rhomboid Cu 2I 2 cluster unit. The solution-state luminescence spectra showed that the high-energy emission may be associated with a metal-to-ligand [Cu → π ∗(pyridine)] or ligand-to-ligand [I − → π ∗(pyridine)] charge-transfer excited state.
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