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由5-取代基间苯二甲酸和二咪唑衍生物构筑的两个二维钴(Ⅱ)的配合物的合成、结构及性质 预览 被引量:1

Syntheses, Structures Constructed from and Properties of 2D Metal-Organic Coordination Polymers 5-Substituted Isophthalic Acid and Bis(imidazole) Ligands
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摘要 通过溶剂热法合成了2个二维钴配位聚合物[Co2(1,4-bib)2(5-hipa)2]n(1)(5-H2hipa=5-hydroxyisophthalic acid,1,4-bib=1,4-bis(1-imidazolyl)benzene),[Co(Hbpt)(4,4′-bidpe)]n(2)(H3bpt=biphenyl-4,4′,5-tricarboxylic acid,4,4′-bidpe=4,4′-bis(imidazol-1-yl)diphenyl ether)。X射线单晶衍射实验测定和结构解析结果表明,配合物1、2中5-hipa^2-、Hbpt^2-配体的2个相间羧基将相邻的Co^2+连接形成含有Co2O4C2八元环和Co2O4C(10)十六元环的一维链状结构。一维链之间通过1,4-bib,4,4′-bidpe配体上的咪唑基N原子与相邻Co(Ⅱ)离子配位连结形成二维层状结构。配合物1层与层之间通过相邻层中的5-hipa^2-配体的羟基与羧基的分子间氢键连结形成三维超分子网络结构。配合物2中,Hbpt配体的羧基氢与层内的相邻链上参与弱配位羧基氧形成层内氢键。电化学性能测试结果表明,配合物1对氧还原反应具有电催化活性。 Two new metal-organic coordination polymers, [Co2(1,4-bib)2(5-hipa):], (1) (5-Hzhipa=5-hydroxyisophth- alic acid, 1,4-bib=l,4-bis(1-imidazolyl)benzene), [Co(Hbpt)(4,4'-bidpe)]n (2) (n3bpt=biphenyl-3,4',5-tricarboxylic acid, 4,4'-bidpe=4,4'-bis(imidazol-l-yl)diphenyl ether) were obtained under solvothermal conditions and chara- cterized structurally. The meta benzenedicarboxylates in 5-hipa2- and Hbpt2- connect the Co(lI) ions into 1D carboxylate-cobah chain structures with 8-membered ring Co204C2 and 16-membered Co204C10 ring alternately. And the bis(imidazole) ligands further link the adjacent 1D carboxylate-cobah chains to construct an interesting two-dimensional layered structure, respectively. The adjacent layers [Co: (1,4-bib): (5-hipa)2] in complex 1 are linked with each other by hydrogen bonding to generate an interesting 3D supramolecular framework. While the hydrogen bonding only exits within the layers of 2. Furthermore, the complex 1/Vulcan XC-72R composite can catalyze the oxygen reduction reaction through a 2e/4e mixed reduction pathway. CCDC: 1576263, 1; 1576262, 2.
作者 杨明星 刘宇晴 岑福艳 陈丽娟 林深 YANG Ming-Xing LIU Yu-Qing CEN Fu-Yan CHEN Li-Juan LIN Shen (College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China)
出处 《无机化学学报》 CSCD 北大核心 2018年第3期569-578,共10页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.21571034)和2017年国家级大学生创新创业训练计划项目资助.
关键词 钴配合物 二维结构 ORR催化剂 cobah(Ⅱ) complex 2D framework ORR catalyst
作者简介 通信联系人。E-mail:shenlin@fjnu.edu.cn;会员登记号:S06001826M。
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