Three metal organic frameworks constructed with 2,2′:6′2′′-terpyridine-4′-carboxylic acid: syntheses, structures and selective dye adsorption

IF 1.7 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Transition Metal Chemistry Pub Date : 2024-10-13 DOI:10.1007/s11243-024-00611-9

Guo-Rong Peng, Wen-Hui Yao, Hao-Bo Zhang, Yan-Hong Zhang

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Abstract

Three metal organic frameworks [Cu₃(tpyc)₃(H₂btc)(Hbtc)·5H₂O]_n (1) [Mn(tpyc)(H₂O)₂·ClO₄]_n (2) and [Mn(tpyc)(bdc)_0.5(H₂O)]_n (3) have been synthesized by using 2,2′:6′2′′-terpyridine-4′-carboxylic acid (Htpyc) in the presence of different auxiliary ligands (H₃btc = 1,3,5-benzenetricarboxylic acid, H₂suc = succinic acid, H₂bdc = 1,4-benzene dicarboxylic acid) under solvothermal conditions. They were analyzed by elemental analysis, FT-IR, X-ray single crystal diffraction, PXRD and TGA. The results show that MOF 1 displays a 1D chain structure, which is further assembled to a 3D architecture via multiple intermolecular hydrogen bonds. MOF 2 also presents a 1D chain structure and the adjacent chains are further connected by hydrogen bonds O1–H1B∙∙∙O2#1, finally forming a 2D layered structure. For MOF 3, its 3D framework structure is formed by hydrogen bond O5–H5A∙∙∙O2#1 and O5–H5B∙∙∙O3#2 interaction between adjacent 1D chains. Furthermore, dye adsorption studies indicate that MOF 3 can selectively adsorb organic dye Congo red.

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用 2,2′:6′2′′-四吡啶-4′-羧酸构建的三种金属有机框架：合成、结构和选择性染料吸附

以2,2′：6′2”-三吡啶-4′-羧酸（H3btc = 1,3,5-苯三羧酸，H2suc =琥珀酸，H2bdc = 1,4-苯二羧酸）为辅助配体，在溶剂热条件下合成了三种金属有机骨架[Cu3(tpyc)3(H2btc)（Hbtc）·5H2O]n (1) [Mn(tpyc)(H2O)2·ClO4]n(2)和[Mn(tpyc)(bdc)0.5(H2O)]n(3)]。采用元素分析、FT-IR、x -射线单晶衍射、PXRD和TGA对其进行了分析。结果表明，MOF 1呈现一维链结构，并通过多个分子间氢键进一步组装成三维结构。MOF 2也呈一维链状结构，相邻链通过氢键O1-H1B∙∙O2#1进一步连接，最终形成二维层状结构。MOF 3的三维框架结构是由相邻1D链之间的氢键O5-H5A∙∙O2#1和O5-H5B∙∙O3#2相互作用形成的。此外，染料吸附研究表明，MOF 3可以选择性吸附有机染料刚果红。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.