A Quinary Metal–Organic Framework Composed of One Metal and One Linker with Ethane-Selective Property

IF 3.4 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Crystal Growth & Design Pub Date : 2023-09-15 DOI:10.1021/acs.cgd.3c00556

Ze-Hua Jiang, Han Fang, Hong-Xin Li and Dong-Xu Xue*,

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Abstract

Solvothermal reaction between Fe₃O(CH₃COO)₆(H₂O)₃ and terphenyl-3,3′’,5,5′’-tetracarboxylic acid (H₄TPTC) afforded a scarce multinary MOF of Quin-Fe-TPTC (Quin and TPTC are abbreviated from quinary and terphenyl-3,3′’,5,5′’-tetracarboxylate, respectively), which exemplifies the first quinary MOF comprising one metal and one linker in contrast to the documented ones assembled from one metal and four linkers or two metals and three linkers. The variation of linker aspect ratio and the deformation of the trinuclear iron cluster may be responsible for creating such a compound. Quin-Fe-TPTC exhibits bihelical channels interconnected through (hemi) cage cavities replete with methyl groups, resulting in C₂H₆-selective adsorption from a binary C₂H₆ and C₂H₄ mixture and benefiting one-step C₂H₄ purification. This was validated by not only IAST prediction but also by dynamic column breakthrough experiments.

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由一种金属和一个具有乙烷选择性的连接体组成的五元金属-有机框架

Fe3O（CH3COO）6（H2O）3与三苯基-3，3′’，5，5′’-四羧酸（H4TPTC）之间的溶剂热反应提供了罕见的Quin-Fe-TPTC的多元MOF（Quin和TPTC分别缩写为quinary和三苯基-3,3′’，5,5′′-四羧酸），其举例说明了包含一种金属和一个连接体的第一五元MOF，与文献记载的由一种金属与四个连接体或两种金属与三个连接体组装的MOF形成对比。连接体纵横比的变化和三核铁簇的变形可能是产生这种化合物的原因。Quin-Fe TPTC表现出通过充满甲基的（半）笼腔互连的双螺旋通道，导致C2H6从二元C2H6和C2H4混合物中选择性吸附，并有利于C2H4的一步纯化。这不仅通过IAST预测得到了验证，还通过动态柱穿透实验得到了验证。

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来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.