Dye adsorption and magnetic properties of four complexes based on imidazole ligands

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL Journal of Molecular Structure Pub Date : 2025-07-05 Epub Date: 2025-02-26 DOI:10.1016/j.molstruc.2025.141849

Bo-Yu Liu, Hao Zhang, Tao Zeng, Tian-Cai Yue, Lu-Lu Wang, Duo-Zhi Wang

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Abstract

One dinuclear structure complex, Zn₂(L¹)₂Cl₄ (1), two coordination polymers (CPs), {[Cd(L¹)₂Cl₂]·2H₂O}n (2) and [Cd(L¹)₃(NO₃)₂]n (3), and one mononuclear structure complex, [Co(L²)₂(H₂O)₄]·6H₂O (4) [L¹ = N-(pyridine-4-methyl)-1H-benzo[d]imidazole-2-amine, HL² = 4-(1H-imidazo[4,5-c]pyridine-2-yl)benzoic acid] have been successfully synthesized and characterized. Complexes 1 and 4 exhibit zero-dimensional (0D) structures, complex 2 has a two-dimensional (2D) structure, and complex 3 displays a one-dimensional (1D) structure. Complexes 1–3 exhibit good adsorption properties toward the anionic dye Congo red (CR), with adsorption capacities of 1018, 222, and 990 mg·g⁻¹, respectively. Additionally, the results of magnetic property studies showed that complex 4 exhibits antiferromagnetic behavior.

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咪唑类配合物的染料吸附及磁性研究

成功地合成了一个双核结构配合物Zn₂（L1）₂Cl₄(1)，两个配位聚合物（CPs） {[Cd（L1）₂Cl₂]·2H₂O}n(2)和[Cd（L1）₃（NO₃）₂]n(3)，以及一个单核结构配合物[Co（L2）₂（H₂O）₄]·6H₂O (4) [L1 = n -（吡啶-4-甲基）- 1h -苯并[d]咪唑-2-胺，HL2 = 4-（1h -咪唑[4,5-c]吡啶-2-基）苯甲酸]并对其进行了表征。配合物1和4为零维（0D）结构，配合物2为二维（2D）结构，配合物3为一维（1D）结构。配合物1-3对阴离子染料刚果红（CR）表现出良好的吸附性能，吸附量分别为1018、222和990 mg·g⁻¹。此外，磁性研究结果表明，配合物4具有反铁磁性。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.