Effect of Polycarboxylate Coligands from Linear to V‐shaped CuII Coordination Polymers Based on a Rigid Tripodal Ligand |
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| Authors: | Hao Wang Xiao‐Dong Li Fei‐Yan Yi Wan‐Guo Tian Yun‐Hui Li Ying Gao Xiu‐Yun Yang Shuang Yao |
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| Affiliation: | 1. School of Chemistry & Environmental Engineering, Changchun University of Science & Technology, Changchun 130022, P. R. China;2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, P. R. China;3. Jilin Jianzhu University, Minist. Educ., Key Lab Songliao Aquat. Environment, 5088 Xincheng St, Changchun 130118, Jilin Province, P. R. China |
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| Abstract: | The layered CuII coordination polymer {[Cu(tib)2(H2O)2](NO3)2} ( 1 ) based on the rigid tripodal 1,3,5‐tris(1‐imidazolyl)benzene (tib) ligand was synthesized by hydrothermal methods. By introducing different polycarboxylate coligands from linear 4,4′‐biphthalic acid (H4L1) to V‐shaped thiophene‐2,5‐dicarboxylic acid (H2L2), two new copper(II) compounds were obtained, namely, {Cu(tib)(H2L1)(H2O) · 3H2O} ( 2 ) and {Cu(tib)(L2) · 3H2O} ( 3 ). X‐ray diffraction analyses reveal that compound 2 displays a hydrogen‐bonded three‐dimensional (3D) supramolecular structure, in which protonated {H2L1}2– ligands occupy some coordination sites around the metal atoms to form one‐dimensional (1D) chain by blocking the formation of two‐dimensional (2D) Cu‐tib layer as in compound 1 . Interestingly, compound 3 features a rare twofold interpenetrating binodal seh ‐3,5‐P43212 topological network by synergistic effect of V‐shaped carboxylate group and functionally complementary N‐donor ligand. These compounds were characterized by elemental analyses, thermogravinetric analyses, and photoluminescent spectroscopy. |
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| Keywords: | Coordination polymers Hydrothermal synthesis Crystal structures Topological variations Luminescence |
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