| 三个含5-(4-羧基苯氧基)烟酸配体的锌(Ⅱ)、钴(Ⅱ)和镍(Ⅱ)配位聚合物的合成、晶体结构及催化性质 | |
| Syntheses, crystal structures, and catalytic properties of three zinc(Ⅱ), cobalt(Ⅱ) and nickel(Ⅱ) coordination polymers constructed from 5-(4-carboxyphenoxy)nicotinic acid | |
| 摘要: 采用水热方法，选用配体5-(4-羧基苯氧基)烟酸(H2cpna)与1，2-二(4-吡啶基)乙烷(dpea)或1，2-二(4-吡啶基)乙烯(dpey)分别与ZnCl2、CoCl2·6H2O和NiCl2·6H2O在160℃温度下反应，合成了3个配位聚合物：[Zn (μ3-cpna)(μ-dpea)0.5]n(1)、[Co (μ3-cpna)(μ-dpey)0.5]n(2)和[Ni (μ3-cpna)(μ-dpey)0.5(H2O)]n(3)。这些配合物为稳定的结晶固体，我们通过红外光谱、元素分析、热重分析和单晶X射线衍射分析对其进行了表征。单晶X射线衍射分析表明，3个配合物的晶体属于三斜晶系P1空间群。配合物1~3呈二维层状结构。我们考察了这些配合物在Knoevenagel缩合反应中的催化活性。研究表明，配合物1和2在室温下对Knoevenagel缩合反应表现出有效的催化活性。同时对反应参数进行了优化，对底物范围也进行了研究。 | |
| 关键词: 配位聚合物 二羧酸 催化性质 Knoevenagel缩合反应 | |
| 基金项目: 广东省科技创新战略专项资金项目(No.pdjh2024b541)资助。 | |
| Abstract: Three zinc(Ⅱ), cobalt(Ⅱ), and nickel(Ⅱ) coordination polymers, namely [Zn(μ3-cpna)(μ-dpea)0.5]n (1), [Co(μ3-cpna)(μ-dpey)0.5]n (2), and [Ni(μ3-cpna)(μ-dpey)0.5(H2O)]n (3), have been constructed hydrothermally using H2cpna (5-(4-carboxyphenoxy)nicotinic acid), dpea (1,2-di(4-pyridyl)ethane), dpey (1,2-di(4-pyridyl)ethylene), and zinc, cobalt, and nickel chlorides at 160 ℃. The products were isolated as stable crystalline solids and were characterized by IR spectra, elemental analyses, thermogravimetric analyses, and single-crystal X-ray diffraction analyses. Single-crystal X-ray diffraction analyses revealed that three compounds crystallize in the triclinic system, space group P1. Compounds 1-3 show 2D layer structures. The catalytic activities in the Knoevenagel condensation reaction of these compounds were investigated. Compounds 1 and 2 exhibit effective catalytic activities in the Knoevenagel condensation reaction at room temperature. For this reaction, various parameters were optimized, followed by the investigation of the substrate scope. | |
| Keywords: coordination polymer dicarboxylic acid catalytic property Knoevenagel condensation reaction | |
| 投稿时间：2024-02-28 修订日期：2024-06-28 | |
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| 凌伟忠,陈香云,刘文静,黄荧开,黎彧.三个含5-(4-羧基苯氧基)烟酸配体的锌(Ⅱ)、钴(Ⅱ)和镍(Ⅱ)配位聚合物的合成、晶体结构及催化性质[J].无机化学学报,2024,40(9):1803-1810. | |
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| Support information: 相关附件： 20240068_Supporting_Information.doc | |
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