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| Structure and magnetic properties of Mn(Ⅱ) coordination polymers regulated by N-auxiliary ligands |
| Author Name | Affiliation | E-mail | | LIU Xiaxia | School of Energy Engineering, Shanxi College of Technology, Shuozhou, Shanxi 036000, China | | | MA Xiaofang | School of Energy Engineering, Shanxi College of Technology, Shuozhou, Shanxi 036000, China | | | GUO Luxia | School of Energy Engineering, Shanxi College of Technology, Shuozhou, Shanxi 036000, China | | | HAN Xianda | School of Materials Engineering, Shanxi College of Technology, Shuozhou, Shanxi 036000, China | | | FENG Sisi | Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China | ssfeng@sxu.edu.cn |
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| Abstract: Two new Mn(Ⅱ) coordination polymers, namely {[Mn2(HL)(phen)3(H2O)2]·7.5H2O}n (1) and [Mn4(HL)2(1,4bib)3(H2O)2]n (2), were synthesized under hydrothermal conditions by using Mn(Ⅱ) ions and 6-(3',4'-dicarboxylphenoxy)-1,2,4-benzenetricarboxylic acid (H5L) in the presence of N-auxiliary ligands 1,10-phenanthroline (phen) and 1,4-bis(1H-imidazol-1-yl)benzene (1,4-bib). The structures of coordination polymers 1 and 2 were characterized by infrared spectroscopy, singlecrystal X-ray diffraction, thermogravimetric analysis, and powder X-ray diffraction. Single-crystal X-ray diffraction reveals that 1 has a 1D chain structure based on binuclear Mn(Ⅱ) units, while 2 features a (3,8)-connected 3D network structure based on tetranuclear Mn(Ⅱ) units. Magnetic studies show that 1 and 2 exhibit antiferromagnetic interactions between manganese ions. 2 shows stronger antiferromagnetic interactions due to the shorter Mn…Mn distances within the tetranuclear manganese units. |
| Keywords: coordination polymers crystal structures binuclear Mn(Ⅱ) unit tetranuclear Mn(Ⅱ) unit magnetism |
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| LIU Xiaxia,MA Xiaofang,GUO Luxia,HAN Xianda,FENG Sisi.Structure and magnetic properties of Mn(Ⅱ) coordination polymers regulated by N-auxiliary ligands[J].Chinese Journal of Inorganic Chemistry,2025,41(3):587-596. |
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