Solvothermal Synthesis and Characterization of Two Cd(Ⅱ)Coordination Polymers with Isomeric Multi-carboxylate Ligands

• 作者: CAI Hua LI Na LI Yan AN Dong-Min
• 来源期刊: 结构化学
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: coordination chemistry
• 页码范围: 637-645
• 页数: 9页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-2995

摘要

In this work two isomeric semi-rigid multi-carboxylate ligands 3,5-bi(3-carboxyphenoxy)benzoic acid(3-H3BCP),3,5-bi(4-carboxyphenoxy)benzoic acid(4-H3BCP)and two rigid ligands(bis-triazole 4-(4-(4H-1,2,4-triazol-4-yl)phenyl)-4H-1,2,4-triazole(L1),2-(1H-pyrazol-3-yl)pyrazine(L2))have been employed to react with Cd(Ⅱ)salts under similar solvothermal reactions.Two novel Cd(Ⅱ)mixed-ligand coordination polymers,namely,{[Cd3(3-BCP)2(L1)]·3H2O}n(1)and[Cd(4-HBCP)(L2)]n(2),have been isolated.1 displays a rare 2D cluster-based network while 2 displays a 3D supramolecular network through weak interactions.Solid-state luminescent properties and thermal analyses of 1 and 2 also have been determined,indicating strong fluorescent emissions and good thermal stabilities.Different coordination modes of two semi-rigid multi-carboxylate ligands and L1 and L2 also have been briefly discussed,which also reveal the great potential in the construction of these novel mixed-ligand luminescent frameworks with diverse structural motifs and unique functional properties.