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| Synthesis, structures, and properties of metal-organic frameworks based on bipyridyl ligands and isophthalic acid |
| Author Name | Affiliation | E-mail | | HOU Jimin | College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China | | | LI Mengyang | College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China | | | GONG Chunhua | School of Advanced Materials and Engineering, Jiaxing Nanhu University, Jiaxing, Zhejiang 314001, China | | | ZHANG Shaozhuang | College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China | | | ZHAN Caihong | College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang 321004, China | chzhan@zjnu.cn | | XU Hao | College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China | | | XIE Jingli | College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang 314001, China | jlxie@mail.zjxu.edu.cn |
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| Abstract: (2E,6E)-4-methyl-2,6-bis(pyridin-3-ylmethylene)cyclohexan-1-one (L1) and 4-methyl-2,6-bis[(E)-4-(pyridin-4-yl)benzylidene]cyclohexan-1-one (L2) were synthesized and combined with isophthalic acid (H2IP), then under solvothermal conditions, to react with transition metals achieving four novel metal organic frameworks (MOFs): [Zn(IP)(L1)]n (1), {[Cd(IP)(L1)]·H2O}n (2), {[Co(IP)(L1)]·H2O}n (3), and [Zn(IP)(L2)(H2O)]n (4). MOFs 1-4 have been characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetry, and elemental analysis. Single-crystal X-ray diffraction shows that MOF 1 crystallizes in the monoclinic crystal system with space group P2 1/n, and MOFs 2-4 belong to the triclinic system with the P$overline{1}$ space group. 1-3 are 2D sheet structures, 2 and 3 have similar structural characters, whereas 4 is a 1D chain structure. Furthermore, 1-3 exhibited certain photocatalytic capability in the degradation of rhodamine B (RhB) and pararosaniline hydrochloride (PH). 4 could be used as a heterogeneous catalyst for the Knoevenagel reaction starting with benzaldehyde derivative and malononitrile. 4 could promote the reaction to achieve corresponding products in moderate yields within 3 h. Moreover, the catalyst exhibited recyclability for up to three cycles without significantly dropping its activity. A mechanism for MOF 4 cat-alyzed Knoevenagel condensation reaction of aromatic aldehyde and malononitrile has been initially proposed. |
| Keywords: bipyridyl ligands metal-organic frameworks photocatalytic degradation Knoevenagel condensation |
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| HOU Jimin,LI Mengyang,GONG Chunhua,ZHANG Shaozhuang,ZHAN Caihong,XU Hao,XIE Jingli.Synthesis, structures, and properties of metal-organic frameworks based on bipyridyl ligands and isophthalic acid[J].Chinese Journal of Inorganic Chemistry,2025,41(3):549-560. |
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