Eight new coordination polymers containing rigid 4-(4-carboxy-phenyl)-pyridine-2-carboxylic acid: Synthesis, structural diversity, fluorescence and magnetic properties
作者:Xiao-Yu Zhang、Hui-Fang Wen、Qing-Feng Yang、Rui-Sha Zhou、Jiang-Feng Song
DOI:10.1016/j.ica.2020.119600
日期:2020.7
for different metal centers, notably, compounds 1–3 with isomorphic frameworks display two-dimensional layer structure, in which contain left- and right-handed chiral chains constructed from M2(H2O)2 dimers and cppc2− anions. However, compound 4 exhibits a three-dimensional network with Cd-O-Cd inorganic chains, different from that of compounds 1–3. Compounds 5–7 also have similar molecular formula
摘要通过H2cppc配体与一系列过渡金属盐[M(cppc)(H2O)2] n [M = Co,(1);的溶剂热反应成功合成了八种新型配位聚合物。镍(2); 锌(3); Cd,(4)],[M(Hcppc)2] n [M = Cd,(5);锰,(6);Cu,(7)],[Pb(cppc)(H 2 O)] n(8),[H 2 cppc = 4-(4-羧基-苯基)-吡啶-2-羧酸]。这些化合物都通过元素分析,红外光谱,单晶X射线衍射,粉末X射线衍射和热分析进行了表征。化合物1-4具有相似的分子式,但金属中心不同,值得注意的是,具有同构构架的化合物1-3显示二维层结构,其中包含由M2(H2O)2二聚体和cppc2-阴离子。然而,化合物4表现出具有Cd-O-Cd无机链的三维网络,与化合物1-3的网络不同。化合物5-7的分子式也不同,除了金属中心不同,同构化合物5和6具有二维起伏层,而化合物7具有一维链。