Capture of volatile iodine by newly prepared and characterized non-porous [CuI]n-based coordination polymers

摘要: Four new non-porous CuI-coordination polymers [Cu2(μ3-I)2(μ-bpb)]n (1a), [Cu(μ2-I)(μ-bpb)]n (1b), [Cu4(μ2-I)4(μ-bpmb)4]n (2), and [CuI(μ-bdb)]n (3) (bpb = 1,4-bis(pyrazolyl)butane; bpmb 1,4-bis[(pyrazolyl)methyl]benzene; bdb 1,4-bis[(3,5-dimethylpyrazolyl)methyl]benzene) have been successfully prepared their structures fully characterized by single-crystal X-ray diffraction, FT-IR spectroscopy, PXRD elemental analysis. Crystallographic investigation revealed that 1a, 1b, 2 exhibit two-dimensional (2D) structures; in 1a parallel [Cu2I2]n staircase motifs are cross-linked into sheets bpb linkers with a extended conformation, while the of 1b Cu2I2 rhomboid dimers linked pbmb ligands, respectively, 44-sql net. Differently, compound 3 shows one-dimensional (1D) zigzag chain structure monomeric CuI units. All four coordination show ability to capture volatile iodine gas phase. The solid-state photoluminescence properties also investigated. iodine-adsorbed samples 1a-I2, 1b-I2, 2-I2 no fluorescence behavior.