Syntheses,crystal structures,and catalytic properties of three zinc(Ⅱ),cobalt(Ⅱ)and nickel(Ⅱ)coordination polymers constructed from 5⁃(4⁃carboxyphenoxy)nicotinic acid  

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

作　　者：LING Weizhong CHEN Xiangyun LIU Wenjing HUANG Yingkai LI Yu 凌伟忠;陈香云;刘文静;黄荧开;黎彧(南方海洋科学与工程广东省实验室(湛江),湛江524025;广东轻工职业技术大学,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)

机构地区：[1]Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang),Zhanjiang,Guangdong 524025,China [2]Guangdong Engineering Technology Research Center of Special Building Materials and Its Green Preparation Technology,Guangdong Industry Polytechnic University,Guangzhou 510300,China

出　　处：《无机化学学报》2024年第9期1803-1810,共8页Chinese Journal of Inorganic Chemistry

基　　金：广东省科技创新战略专项资金项目(No.pdjh2024b541)资助。

摘　　要：Three zinc(Ⅱ),cobalt(Ⅱ),and nickel(Ⅱ)coordination polymers,namely[Zn(μ^(3-)cpna)(μ-dpea)_(0.5)]_(n)(1),[Co(μ^(3-)cpna)(μ-dpey)_(0.5)]_(n)(2),and[Ni(μ^(3-)cpna)(μ-dpey)_(0.5)(H_(2)O)]_(n)(3),have been constructed hydrothermally using H_(2)cpna(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 condensa-tion reaction at room temperature.For this reaction,various parameters were optimized,followed by the investiga-tion of the substrate scope.CCDC:2335676,1;2335677,2;2335678,3.采用水热方法,选用配体5-(4-羧基苯氧基)烟酸(H_(2)cpna)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ZnCl_(2)、CoCl_(2)·6H_(2)O和NiCl_(2)·6H_(2)O在160℃温度下反应,合成了3个配位聚合物:[Zn(μ_(3)-cpna)(μ-dpea)_(0.5)]_(n)(1)、[Co(μ_(3)-cpna)(μ-dpey)_(0.5)]_(n)(2)和[Ni(μ_(3)-cpna)(μ-dpey)_(0.5)(H_(2)O)]_(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：coordination polymer dicarboxylic acid catalytic property Knoevenagel condensation reaction 

分 类 号：O614.241[理学—无机化学] O614.812[理学—化学] O614.813