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A new one-dimensional Cd(II) coordination polymer with a two-dimensional supramolecular architecture: synthesis, structural characterization and fluorescence properties
- Zhong, Kai-Long, Song, Wei, Ni, Chao, Cao, Guo-Qing
- Zeitschrift für Naturforschung 2019 v.74 no.4 pp. 341-345
- X-ray diffraction, cadmium, cations, coordination polymers, fluorescence, geometry, hydrogen bonding, infrared spectroscopy, ligands, thermogravimetry
- A new coordination polymer [Cd(C₁₀H₈N₂)₂ (C₁₀H₄O₈)]ₙ (C₁₀H₈N₂ = 2,2′-bipyridine and C₁₀H₄O₈ = 2,5-dicarboxybenzene-1,4-dicarboxylate) has been hydrothermally synthesized and characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis and single-crystal X-ray diffraction. Crystal structural analysis reveals that the Cdᴵᴵ cation is coordinated by two 2,5-dicarboxybenzene-1,4-dicarboxylate ligands and two 2,2′-bipyridine molecules, forming a distorted octahedral CdN₄O₂ coordination geometry. The 2,5-dicarboxybenzene-1,4-dicarboxylate ligands link the Cdᴵᴵ cations to generate a one-dimensional metal-organic structure running along the [0 1 0] direction. Adjacent chains are further connected by carboxyl-carboxyl O–H···O hydrogen bonds, resulting in a two-dimensional supermolecular architecture running parallel to the (1 0 0) plane in the solid state. The fluorescence properties of the complex were investigated.