The construction of metal-organic frameworks based on 2-(1-hydroxy-ethyl)-3H-benzoimidazole-5-carboxylic acid

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-03-20 DOI:10.1016/j.jssc.2025.125336

Zhi-Xiong Lin , Zi-Yi Zhu , Yu-Huan Tang , Hui-Zi Li , Fei Wang , Jian Zhang

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Abstract

Presented here are two novel metal-organic frameworks (MOFs) synthesized by employing a trifunctional imidazolate derivative, 2-(1-hydroxy-ethyl)-3H-benzoimidazole-5-carboxylic acid (H₂ebimc) as a ligand. In compound 1, the Zn atoms and ebimc²⁻ ligands were crosslinked to build a wavelike two-dimensional (2D) layer with 3-connected (4.8²) topology, with water molecules as terminal ligands coordinated on both sides of the layers. Then, the D-(+)-camphoric acid (H₂cam) ligand was introduced into the synthesis system to obtain compound 2. In compound 2, similar topological layers were formed based on Zn₂(CO₂)₃ subunits (SBUs) and then were further pillared by cam²⁻ ligands to construct the final three-dimensional (3D) pillar-layered framework. Moreover, compound 2 exhibited high selectivity of CO₂ over N₂ and CH₄, along with a distinctive framework flexibility triggered by C₂H₆. Our results highlight the great potential of H₂ebimc as a multifunctional ligand for synthesizing MOFs.

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基于2-（1-羟基乙基）- 3h -苯并咪唑-5-羧酸的金属有机骨架的构建

本文介绍了以三官能团咪唑衍生物2-（1-羟基乙基）- 3h -苯并咪唑-5-羧酸（H2ebimc）为配体合成的两种新型金属有机骨架（mof）。在化合物1中，锌原子和ebimc2−配体交联，构建了具有3连通（4.82）拓扑结构的波状二维（2D）层，水分子作为末端配体在层的两侧协调。然后，将D-(+)-樟脑酸（H2cam）配体引入合成体系，得到化合物2。在化合物2中，基于Zn2(CO2)3亚基（SBUs）形成类似的拓扑层，然后用cam2 -配体进一步支撑，构建最终的三维（3D）柱状层状框架。此外，化合物2对N2和CH4具有较高的选择性，并具有由C2H6触发的独特的框架柔韧性。我们的研究结果突出了氢铋作为一种多功能配体用于合成mof的巨大潜力。

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.