Citation: Yuxin CHEN, Yanni LING, Yuqing YAO, Keyi WANG, Linna LI, Xin ZHANG, Qin WANG, Hongdao LI, Wenmin WANG. Construction, structures, and interaction with DNA of two Sm^Ⅲ₄ complexes[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(6): 1141-1150. doi: 10.11862/CJIC.20240258 shu

Construction, structures, and interaction with DNA of two Sm^Ⅲ₄ complexes

Yuxin CHEN ¹ ,
Yanni LING ¹ ,
Yuqing YAO ¹ ,
Keyi WANG ¹ ,
Linna LI ¹ ,
Xin ZHANG ¹ ,
Qin WANG ^1,, ,
Hongdao LI ^2,, ,
Wenmin WANG ^1,,

1.
College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China
2.
Department of Chemistry and Chemical Engineering, Taiyuan Institute of Technology, Taiyuan, Shanxi 030008, China

Corresponding author: Qin WANG, wqmartin@126.com Hongdao LI, lihong.dao@163.com Wenmin WANG, wangwenmin0506@126.com
Received Date: 7 July 2024
Revised Date: 15 March 2025

Figures(10)

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.
- Sm₄ complexes,
- Schiff base ligands,
- crystal structures,
- DNA-binding
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Construction, structures, and interaction with DNA of two Sm^Ⅲ₄ complexes