Multi-dimensional copper(I) and silver (I) coordination polymers assembled with a pyridyl bis-urea macrocyclic ligand
Multi-dimensional copper(I) and silver (I) coordination polymers assembled with a pyridyl bis-urea macrocyclic ligand
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DOI：
10.1016/j.poly.2021.115170
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发表时间：
2021-06
期刊：
影响因子：
2.6
通讯作者：
Bozumeh Som;Mark D. Smith;Linda S. Shimizu
中科院分区：
文献类型：
--
作者：
Bozumeh Som;Mark D. Smith;Linda S. Shimizu
本文报道了一种新的柔性多峰大环配体--保护吡啶基双脲大环1及其两种配位聚合物Cu_2I_2（1）_2·（CH_3CN）_1.63（2）和[Ag（1）]（NO_3）的合成。（H2O）2.49（3）.该配体具有构象灵活性，可根据金属离子的不同而采用不同的构象和结合方式。化合物2的晶体结构为菱形Cu 2 I2二聚体单元构成的二维配位网络，化合物1作为桥联配体通过吡啶基N原子与Ag（I）离子结合，化合物3形成复杂的三维配位结构，两个相邻大环配体的吡啶基N原子与Ag（I）离子通过N-Ag-N键形成一维链.这些链通过较长的Ag-O相互作用形成2D层，并且链通过涉及间隙水分子的氢键连接在一起形成3D网络。这些结果表明配体1在具有不同拓扑结构和功能应用的配位聚合物的自组装中的潜力。
We report the synthesis of a new flexible multimodal macrocyclic ligand, protected pyridylbis-urea macrocycle1, and two of its coordination polymers Cu2I2(1)2·(CH3CN)1.63(2) and [Ag(1)](NO3).(H2O)2.49(3). The ligand possesses conformational flexibility and adopts different conformations and binding modes depending on the metal ions. The crystal structure of2shows a 2D coordination network constructed from rhomboidal Cu2I2dimer units and1as a bridging ligand binding through the pyridyl N atoms.3forms a sophisticated 3D structure with 1D chains formed by N-Ag-N links between pyridyl N atoms of two adjacent macrocyclic ligands and Ag(I) ions. These chains form 2D layers through longer Ag-O interactions and the chains are linked together into a 3D network by hydrogen bonding involving interstitial water molecules. These results indicate the potential of ligand1in the self-assembly of coordination polymers with diverse topology and functional applications.