基于醚氧桥联四羧酸配体构筑的三个钴(Ⅱ)、铜(Ⅱ)和镉(Ⅱ)配位聚合物的合成、结构和在Knoevenagel缩合反应中的催化性质
Synthesis, structures, and catalytic activity in the Knoevenagel condensation reaction of three Co(Ⅱ), Cu(Ⅱ), and Cd(Ⅱ) coordination polymers based on an ether-bridged tetracarboxylic acid
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牟佳雪 广东轻工职业技术学院,广东省特种建筑材料及其绿色制备工程技术研究中心,广州 510300  
李雄 广东轻工职业技术学院,广东省特种建筑材料及其绿色制备工程技术研究中心,广州 510300  
邹训重 广东轻工职业技术学院,广东省特种建筑材料及其绿色制备工程技术研究中心,广州 510300  
冯安生 广东轻工职业技术学院,广东省特种建筑材料及其绿色制备工程技术研究中心,广州 510300  
黎彧 广东轻工职业技术学院,广东省特种建筑材料及其绿色制备工程技术研究中心,广州 510300 liyuletter@163.com 
摘要: 采用水热方法,选用醚氧桥联四羧酸配体H4dia与菲咯啉(phen)、2,2'-联吡啶(bipy)或双(4-吡啶基)胺(bpa)分别与CoCl2·6H2O、CuCl2·2H2O和CdCl2·4H2O在160℃下反应,得到了一个一维链结构[Co24-dia)(phen)2(H2O)2]n (1)和2个三维网络结构的配位聚合物[Cu26-dia)(bipy)2]n (2)和{[Cd25-dia)(μ-bpa)2(H2O)]·H2O}n (3),并对其结构和催化性质进行了研究。研究表明,在50℃下配合物2在Knoevenagel缩合反应中显示出很好的催化活性。
关键词: 配位聚合物  四羧酸  催化性质  Knoevenagel缩合反应
基金项目: 广东省教育厅青年人才项目(No.2022KQNCX174)资助。
Abstract: Three cobalt(Ⅱ)), copper(Ⅱ), and cadmium(Ⅱ) coordination polymers, namely [Co24-dia)(phen)2(H2O)2]n (1), [Cu26-dia)(bipy)2]n (2), and {[Cd25-dia)(μ-bpa)2(H2O)]·H2O}n (3) have been constructed hydrothermally using H 4dia (5-(2,5-dicarboxyphenoxy)isophthalic acid), phen (phen=1,10-phenanthroline), bipy (2,2'-bipyridine), bpa (bis(4-pyridyl)amine), and cobalt, copper and cadmium chlorides at 160 ℃. The products were isolated as stable crystalline solids and were characterized by IR spectra, elemental analyses, thermogravimetric analyses, and singlecrystal X-ray diffraction analyses. Single-crystal X-ray diffraction analyses reveal that three compounds crystallize in the monoclinic or triclinic systems, space groups P21/n, P21/c, or P1. Compound 1 discloses a 1D double-chain structure. Compounds 2 and 3 show 3D frameworks. The catalytic activity in the Knoevenagel condensation reaction of these compounds was investigated. Compound 2 exhibited excellent catalytic activity in the Knoevenagel condensation reaction at 50 ℃. CCDC: 2209559, 1; 2209560, 2; 2209561, 3.
Keywords: coordination polymer  tetracarboxylic acid  catalytic properties  Knoevenagel condensation reaction
投稿时间:2022-09-30 修订日期:2022-12-14
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