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首页> 外文期刊>Crystal growth & design >Anion-Controlled Synthesis of Enantiomeric Twofold Interpenetrated 3D Zinc(II) Coordination Polymer with Ligand Substitution-Induced Single-Crystal-to-Single-Crystal Transformation and Photocatalysis
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Anion-Controlled Synthesis of Enantiomeric Twofold Interpenetrated 3D Zinc(II) Coordination Polymer with Ligand Substitution-Induced Single-Crystal-to-Single-Crystal Transformation and Photocatalysis

机译：阴离子控制合成对映体双重的渗透3D锌（II）配位配位与配体替代诱导的单晶对单晶转化和光催化分解

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摘要

An anion-controlled synthesis of a new three-dimensional (3D) "racemate", an enantiomorphic twofold interpenetrated 3D zinc(II) coordination polymer containing bridging glutarate (glu) and 4,4'-bipyridine (4,4'-bipy) ligands, {[Zn-4(H2O)(2)(4,4'-bipy)(4)(glu)(3)](NO3)(2)}(n), 1 (P2(1)/c), with ligand substitution-induced single-crystal-to-single-crystal (SCSC) transformation and photocatalysis for dye degradation was studied. The influence of a counteranion in zinc(II) starting materials and synthetic techniques upon the phase formation were explored. The complex 1 was successfully synthesized from zinc(II) nitrate salt via microwave-assisted techniques as well as the conventional hydrothermal technique, whereas the employment of zinc(II) acetate or sulfate salt yielded a two-dimensional coordination polymer, [Zn(4,4'-bipy)(glu)](n), 2 (P (1) over bar), and the use of zinc(II) chloride led to a one-dimensional (1D) zigzag chain, [Zn(4,4'-bipy)Cl-2](n) 3 (C2/c). The synthetic-method-dependent formation was illustrated as the microwave-assisted techniques and conventional hydrothermal technique enabled the formation of crystalline-phase pure 1, while the sonochemical synthesis provided mixed crystalline-phases of 1 and 2. In the structure of 1, the 4,4'-bipy ligand links dinuclear Zn(II) building units into 1D chains along the [(1) over bar 01] direction. The glu(2-) ligand acts as tethering linkers expanding the structure into a cationic 3D coordination polymer that interpenetrates with its enantiomer to give a 3D solid-state "racemate". Powder X-ray diffraction revealed that the ligand substitution-induced SCSC transformation of the twofold interpenetrated 3D framework, 1 (P21/c), which was triggered by chloride, led to a 1D zigzag chain, 3 (C2/c), whereas the bromide-triggered reaction led to a mixed crystalline phase between the isostructural 1D zigzag chain, [Zn(4,4'-bipy)Br-2](n), 4 (C2/c), and its polymorph, [Zn(4,4'-bipy)Br-2](n), 5 (P2(1)2(1)2(1)). The photoc
机译：一种新型三维（3D）“外消旋体”的阴离子控制合成，一种对映体双重互穿3D锌（II）配位聚合物，含有桥连戊二酸（glu）和4,4'-联吡啶（4,4'-联吡啶）配体，{[Zn-4（H2O）（2）（4,4'-联吡啶）（4）（glu）（3）]（NO3）（2）}（n），1（P2（1）/c，研究了配体取代诱导的单晶到单晶（SCSC）转化及光催化降解染料的方法。探讨了锌（II）原料中的反阴离子和合成工艺对相形成的影响。配合物1是通过微波辅助技术以及传统的水热技术从硝酸锌（II）盐中成功合成的，而使用乙酸锌（II）盐或硫酸锌盐产生了二维配位聚合物[Zn（4,4'-bipy）（glu）]（n），2（P（1）在棒上，使用氯化锌（II）形成一维（1D）之字形链，[Zn（4,4'-bipy）Cl-2]（n）3（C2/c）。微波辅助技术和传统水热技术使纯1晶相的形成成为可能，而声化学合成提供了1和2的混合晶相。在1的结构中，4,4'-bipy配体将双核Zn（II）构建单元沿[（1）over bar 01]方向连接成1D链。glu（2-）配体充当栓系连接物，将结构扩展为阳离子3D配位聚合物，该聚合物与其对映体相互渗透，形成3D固态“外消旋体”。粉末X射线衍射显示，由氯化物引发的配体取代诱导的双互穿3D骨架1（P21/c）的SCSC转变导致了一维之字形链3（C2/c），而溴引发的反应导致了同构一维之字形链[Zn（4,4'-bipy）Br-2]（n），4（C2/c）与其多晶型物之间的混合晶相，[Zn（4,4'-bipy）Br-2]（n），5（P2（1）2（1）2（1））。照片

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  • 来源
    《Crystal growth & design》 |2021年第5期|共12页
  • 作者

    Kaeosamut Nippich; Chimupala Yothin; Yimklan Saranphong;

  • 作者单位

    Chiang Mai Univ Fac Sci Dept Chem Chiang Mai 50200 Thailand;

    Chiang Mai Univ Fac Sci Res Lab Pollut Treatment &

    Environm Mat Dept Ind Chem Ctr Excellence Mat Sci &

    Technol Chiang Mai 50200 Thailand;

    Chiang Mai Univ Fac Sci Mat Sci Res Ctr Chiang Mai 50200 Thailand;

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