Authors
Kaiwen Lei, Yudong Shen, Siyu Wang, Hongbo Yu, Weile Wang, Ting Fang, Hang Wu, Wei Xu
Published in
Inorganic chemistry. Jul 01, 2026. Epub Jul 01, 2026.
Abstract
The controllable synthesis of metal-organic frameworks (MOFs) with tailored structures and functionalities remains a key focus in materials chemistry, with solvent engineering serving as a powerful strategy for structural regulation. Herein, four europium-based MOFs (Eu-MOFs) derived from 2,5-dihydroxyterephthalic acid (H2DHTA) were solvothermally synthesized by varying the H2O/CH3CN solvent ratio ([Eu(DHTA)1.5(H2O)3]·H2O 1; [Eu2(DHTA)3(H2O)6]·2H2O 2; [Eu2(DHTA)3(H2O)4] 3; and [Eu2(DHTA)3(H2O)4]·H2O 4). Single-crystal X-ray diffraction analyses demonstrate that the solvent composition precisely regulates the crystal structures of Eu-MOFs, including framework dimensionality, metal nuclearity, dihedral angles, and interligand angles, through hydrogen-bonding interactions and competitive coordination effects. Notably, compound 3 exhibits excellent catalytic activity toward the CO2-based N-formylation of amines at room temperature, affording high conversion for a wide range of amine substrates. In situ DRIFTS measurements further clarify the catalytic mechanism. This work not only systematically explores the solvent effect on the structural tuning of Eu-MOFs but also provides a highly efficient catalyst for the green conversion of CO2, demonstrating promising potential in sustainable catalysis and energy-related applications.
PMID:
42387262
Bibliographic data and abstract were imported from PubMed on 02 Jul 2026.
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