首页> 外文期刊>RSC Advances >Zn-II and Cd-II MOFs based on an amidoisophthalic acid ligand: synthesis, structure and catalytic application in transesterification
【24h】

Zn-II and Cd-II MOFs based on an amidoisophthalic acid ligand: synthesis, structure and catalytic application in transesterification

机译:基于酰氨基邻苯二甲酸配体的Zn-II和CD-II MOF:酯交换中的合成,结构和催化应用

获取原文
获取原文并翻译 | 示例
           

摘要

Solvothermal reaction of zinc(II) and cadmium(II) salts with 5-propionamidoisophthalic acid (H(2)L1) and 5-benzamidoisophthalic acid (H(2)L2) in the presence or absence of an auxiliary ligand gives rise to a series of 1D, 2D and 3D Zn(II) or Cd(II) self-assembled metal-organic frameworks as revealed by X-ray diffraction structural analyses: [Zn(mu-L1-mu-1 kappa OO':2 kappa O '')(formamide)(2)](n) (1), [{Zn-2(mu-L1-1 kappa O:2 kappa O')(2)(4,4'-bipyridine)(2)(H2O)}center dot 2(DMF)center dot 5(H2O)](n) (2), [Cd(mu-L1-mu-1 kappa(OO)-O-2':2 kappa O '' O-2 ''')(DMF)](n) (3), [{Zn(mu-L2-1 kappa O:2 kappa O')(4,4'-bipyridine)(H2O)}center dot(H2O)](n) (4) and [{Cd(mu-L2-mu-1 kappa(OO)-O-2':2 kappa O '' O-2 ''')(formamide)(4,4'-bipyridine)}center dot(formamide)](n) (5), which are also characterized by elemental analysis, IR spectroscopy and thermogravimetric analysis. The different architectures found in 1-5 result from the coordination modes of the carboxylate groups, which can assume nonbridging monodentate (in 1, 2 and 4), bridging bidentate (also in 1), bridging chelate (in 3 and 5) and chelate bidentate (also in 5) coordination. While 1 and 5 possess one dimensional double chain type structures, 3 has a 1D cyclic type structure and 2 and 4 have 2D or 3D wave-like structures, respectively. Topological analysis has shown that 1 and 5 have a 3-connected uninodal net with a topological type SP1-periodic net, 2 has a 2,4-connected binodal net, 3 has a 4-connected uninodal net structure and 4 has a more complex 2,2,2,4-connected tetranodal net. Frameworks 1-5 act as heterogeneous catalysts for the transesterification reaction of different carboxylate esters, with 4 showing the highest activity. These heterogeneous catalysts can be recycled without losing activity.
机译:锌的溶剂热反应(II),镉(II)与5- propionamidoisophthalic酸盐(H(2)L1)和5- benzamidoisophthalic酸(H(2)L2)中的辅助配体的存在或不存在产生了一个系列1D,2D和3D的Zn(II)或Cd(II)的自组装金属有机骨架通过X射线衍射结构分析所揭示的:[锌(MU-L1-MU-1卡帕OO':2卡帕ø '')(甲酰胺)(2)](N)(1),[{的Zn-2(MU-L1-1卡帕○:2卡帕O')(2)(4,4'-联吡啶)(2) (H2O)}中心点2(DMF)中心点5(H2O)](N)(2)中,[CD(MU-L1-MU-1卡帕(OO)-O-2' :2卡帕O '' O -2 '' ')(DMF)](N)(3),[{锌(MU-L2-1卡帕○:2卡帕O')(4,4'-联吡啶)(H2O)}中心点(H2O )](N)(4)和[{镉(MU-L2-MU-1卡帕(OO)-O-2 ':2卡帕O '' O-2 ''')(甲酰胺)(4,4'联吡啶)}中心点(甲酰胺)](N)(5),其特征还在于通过元素分析,红外光谱和热重分析。不同的体系结构中1-5个结果发现从羧酸酯基团的配位模式,这可以假定非桥接的单齿(在1,2和4),二齿桥(也在1),桥接螯合物(在3和5)和螯合物双齿(也有5)协调。虽然图1和5具有一层维双链型结构,3具有1D环状型结构和2和4具有二维或三维波浪状结构,分别。拓扑分析表明,1和5具有一个3连接的单节净用拓扑型SP1周期性网,2具有2,4-连接的双结点网,3具有4连接的单节网状结构和4具有更复杂的2,2,2,4-连接tetranodal净。框架1-5充当非均相催化剂用于不同的羧酸酯的酯交换反应,用4显示出最高活性。这些非均相催化剂可以在不丢失活动进行回收。

著录项

  • 来源
    《RSC Advances》 |2016年第92期|共12页
  • 作者单位

    Univ Lisbon Ctr Quim Estrut Inst Super Tecn Ave Rovisco Pais P-1049001 Lisbon Portugal;

    Univ Lisbon Ctr Quim Estrut Inst Super Tecn Ave Rovisco Pais P-1049001 Lisbon Portugal;

    Univ Lisbon Ctr Quim Estrut Inst Super Tecn Ave Rovisco Pais P-1049001 Lisbon Portugal;

    Univ Lisbon Ctr Quim Estrut Inst Super Tecn Ave Rovisco Pais P-1049001 Lisbon Portugal;

    Univ Lisbon Ctr Quim Estrut Inst Super Tecn Ave Rovisco Pais P-1049001 Lisbon Portugal;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号