Influence of the nature of an alkylammonium cation on the structure of the metal-organic frameworks based on ZnII and 2,5-furandicarboxylate

IF 1.7 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Russian Chemical Bulletin Pub Date : 2025-08-16 DOI:10.1007/s11172-025-4689-0

A. A. Shurenkov, A. A. Lysova, D. G. Samsonenko, V. P. Fedin

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Abstract

The influence of the nature of an organic cation (dimethylammonium (Me₂NH₂⁺), diethylammonium (Et₂NH₂⁺), and tetramethylammonium (Me₄N⁺)) on the structure of the metal-organic frameworks (MOFs) was studied. The presence of organic dimethyl- or diethylammonium cations, which can act as proton donors in hydrogen bonding, in the Zn²⁺—fdc²⁻—DMF system (fdc²⁻ is 2,5-furandicarboxylate) results in the formation of MOFs [Me₂NH₂]₂[Zn₃(fdc)₄]•2DMF(1) and [Et₂NH₂]₂[Zn₃(fdc)₄]•2DMF•2H₂O (2), which have similar crystal structures of the anionic type and crystallize in the same space group P2₁/c. By contrast, the organic cation Me₄N⁺, which does not contain potential hydrogen-bond donors, promotes the distortion of the framework structure and the formation of a new three-dimensional (3D) anionic MOF [Me₄N]₂[Zn₃(fdc)₄]•DMF•0.5H₂O (3) crystallizing in the space group P2₁/n. Compounds 2 and 3 were characterized by single-crystal X-ray diffraction analysis, powder X-ray diffraction analysis, elemental analysis, thermogravimetry, and IR spectroscopy.

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烷基铵阳离子性质对基于ni和2,5-呋喃二羧酸盐的金属有机骨架结构的影响

研究了有机阳离子(二甲基铵（Me2NH2+）、二乙基铵（Et2NH2+）和四甲基铵（Me4N+）的性质对金属有机骨架（MOFs）结构的影响。在Zn2+ - fdc2−- dmf体系（fdc2−为2,5-呋喃二羧酸盐）中，有机二甲基或二乙基铵阳离子作为氢键的质子供体，形成了mof [Me2NH2]2[Zn3(fdc)4]•2DMF(1)和[Et2NH2]2[Zn3(fdc)4]•2DMF•2H2O(2)，它们具有相似的阴离子型晶体结构，并在相同的空间群P21/c中结晶。相比之下，不含潜在氢键供体的有机阳离子Me4N+促进了框架结构的扭曲，并在P21/n空间群中形成新的三维（3D）阴离子MOF [Me4N]2[Zn3(fdc)4]•DMF•0.5H2O(3)结晶。化合物2和3通过单晶x射线衍射分析、粉末x射线衍射分析、元素分析、热重分析和红外光谱进行了表征。

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来源期刊

Russian Chemical Bulletin 化学-化学综合

CiteScore

2.70

自引率

47.10%

发文量

257

审稿时长

3-8 weeks

期刊介绍： Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections: General and Inorganic Chemistry; Physical Chemistry; Organic Chemistry; Organometallic Chemistry; Chemistry of Natural Compounds and Bioorganic Chemistry.