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首页> 外文期刊>Crystal growth & design >Homochiral Porous Metal-Organic Frameworks Constructed from a V-Shaped Alanine Derivative Based on Pyridyl-Dicarboxylate
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Homochiral Porous Metal-Organic Frameworks Constructed from a V-Shaped Alanine Derivative Based on Pyridyl-Dicarboxylate

机译:基于吡啶基二羧酸酯的V形丙氨酸衍生物构成的Homochiral多孔金属 - 有机框架

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摘要

Three novel, homochiral, porous metal organic frameworks based on the H(2)PDBAla ligand and different divalent cations (Co(II)) and Cu(II)), namely, [M(PDBAla)(bipy)-(H2O)(2)]center dot 3H(2)O (M = Co 1 and Cu 2), [Cu(PDBAla)(bpea)]center dot 7H(2)O (3) (H(2)PDBAla = pyridine-2,6-dicarbonyl-bis(L-alanine), bipy = 4,4'-bipyridine, bpea = 1,2-bis(4-pyridyl)ethane), have been synthesized and characterized with the assistance of N-donor ligands. The distinctive H(2)PDBAla ligands are coordinated to divalent metal ions by the different coordination modes, forming various helixes in compounds 1-3. Compounds 1 and 2 are isostructural and feature a 2-fold interpenetrating three-dimensional (3D) framework with the cds topological net built by the combination right-handed helical chains and bipy ligands, whereas a 3D framework with the tcj topological net is observed in compound 3, wherein bpea ligands reinforce the 3D framework constructed by right-handed helical chains. Compounds and 3 display high CO2 absorption capability and superior sorption enthalpies, reflecting the strong affinity of the frameworks for CO2. Moreover, compound 3 exhibits a small enantioselective separation performance for racemic alcohol.
机译:基于H(2)Pdbala配体和不同二价阳离子(CO(II))和Cu(II)),即[M(Pdbala)(Bipy) - (H2O)(H2O)(H2O)( 2)]中心点3H(2)O(m = CO 1和Cu 2),[Cu(Pdbala)(BPEA)]中心点7h(2)O(3)(H(2)Pdbala =吡啶-2,已经合成了6-二羰基 - 双(L-丙氨酸),Bipy = 4,4'-硼吡啶,BPEA = 1,2-双(4-吡啶基)乙烷)并在N-供体配体的辅助方面进行了合成的,其特征在于。独特的H(2)Pdbala配体通过不同的配位模式与二价金属离子配位,在化合物1-3中形成各种螺旋。化合物1和2是具有由组合右手螺旋链和Bipy配体构建的CDS拓扑网的2倍的互穿的三维(3D)框架,而观察到具有TCJ拓扑网的3D框架化合物3,其中BPEA配体加强了由右手螺旋链构成的3D框架。化合物和3显示高二氧化碳吸收能力和优异的吸附焓,反映了框架对CO2的强烈亲和力。此外,化合物3对外消旋醇表现出小型对映选择性分离性能。

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  • 来源
    《Crystal growth & design》 |2019年第4期|共9页
  • 作者单位

    East China Normal Univ Shanghai Key Lab Green Chem &

    Chem Proc Sch Chem &

    Mol Engn Shanghai 200241 Peoples R China;

    East China Normal Univ Shanghai Key Lab Green Chem &

    Chem Proc Sch Chem &

    Mol Engn Shanghai 200241 Peoples R China;

    East China Normal Univ Shanghai Key Lab Green Chem &

    Chem Proc Sch Chem &

    Mol Engn Shanghai 200241 Peoples R China;

    East China Normal Univ Shanghai Key Lab Green Chem &

    Chem Proc Sch Chem &

    Mol Engn Shanghai 200241 Peoples R China;

    East China Normal Univ Shanghai Key Lab Green Chem &

    Chem Proc Sch Chem &

    Mol Engn Shanghai 200241 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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