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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Framework coordination polymers of tetra(4-carboxyphenyl)porphyrin and lanthanide ions in crystalline solids
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Framework coordination polymers of tetra(4-carboxyphenyl)porphyrin and lanthanide ions in crystalline solids

机译：结晶固体中四（4-羧基苯基）卟啉和镧系离子的骨架配位聚合物

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摘要

Targeted synthesis of framework coordination polymers was achieved by reacting meso-tetra(4-carboxyphenyl)porphyrin with common salts of lanthanide metal ions. The large size,high coordination numbers and strong affinity for oxo ligands of the latter,combined with favourable hydrothermal reaction conditions in acidic environments,allowed the formation of open three-dimensional single-framework architectures in which the tetra-dentate porphyrin units are inter-coordinated by multinuclear assemblies of the bridging metal ions,which serve as construction pillars,into infinite architectures. Three different modes of coordination polymerisation were characterized by single-crystal X-ray diffraction. They differ by the nuclearity of the metal connectors. All structures exhibit,however,layered organization of the porphyrin-metal domains,and periodically spaced solvent accessible channel voids that penetrate through these layers throughout the corresponding crystals. Thermal analysis provided additional insight into the stability of these polymeric materials.
机译：通过使内消旋四（4-羧苯基）卟啉与镧系金属离子的普通盐反应，可以实现骨架配位聚合物的目标合成。后者的大尺寸，高配位数和对氧代配体的亲和力强，再加上在酸性环境中良好的水热反应条件，可形成开放的三维单构架结构，其中四齿卟啉单元相互之间通过桥接金属离子的多核组装体（作为构造支柱）协调成无限的体系结构。通过单晶X射线衍射表征了三种不同的配位聚合模式。它们的区别在于金属连接器的核。但是，所有结构均显示出卟啉-金属域的分层组织，并有周期性间隔开的溶剂可及通道空隙，这些空隙贯穿相应的晶体贯穿这些层。热分析提供了对这些聚合材料稳定性的更多了解。

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