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| Construction, structures, and interaction with DNA of two SmⅢ4 complexes |
| Author Name | Affiliation | E-mail | | CHEN Yuxin | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | LING Yanni | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | YAO Yuqing | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | WANG Keyi | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | LI Linna | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | ZHANG Xin | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | WANG Qin | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | wqmartin@126.com | | LI Hongdao | Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China | lihong.dao@163.com | | WANG Wenmin | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | wangwenmin0506@126.com |
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| Abstract: Two new tetranuclea Sm(Ⅲ)-based complexes with the formula [Sm4(L1)6(acac)4(μ3-OH)2]·CH3CN (1) and [Sm4(L2)6(acac)4(μ3-OH)2]·CH3CN (2) (Hacac=acetylacetone) have been constructed via the solvothermal method by using Schiff base ligands 5-[(4-ethylbenzylidene)amino]quinolin-8-ol (HL1) and 5-{[(1,1′-biphenyl)-4-ylmethylene] amino}quinolin-8-ol (HL2) reacting with Sm(acac)3·2H2O. Single-crystal X-ray diffraction reveals that complexes 1 and 2 have similar structures, and their structures are mainly composed of four Sm(Ⅲ) ions, four acac- ions, six L1- or L2- ions, and two μ3-OH- ions. The four central Sm(Ⅲ) ions are connected by six μ2-O atoms and two μ3-OH- atoms forming a rhombic Sm4 core. The interaction between clusters 1 and 2 and calf thymus DNA (CTDNA) was studied by ultraviolet spectroscopy, cyclic voltammetry, and fluorescence spectroscopy. The results reveal that complexes 1 and 2 could bind to CTDNA mainly by intercalation. |
| Keywords: Sm4 complexes Schiff base ligands crystal structures DNA-binding |
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| CHEN Yuxin,LING Yanni,YAO Yuqing,WANG Keyi,LI Linna,ZHANG Xin,WANG Qin,LI Hongdao,WANG Wenmin.Construction, structures, and interaction with DNA of two SmⅢ4 complexes[J].Chinese Journal of Inorganic Chemistry,2025,41(6):1141-1150. |
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