Citation: Jia JI, Zhaoyang GUO, Wenni LEI, Jiawei ZHENG, Haorong QIN, Jiahong YAN, Yinling HOU, Xiaoyan XIN, Wenmin WANG. Two dinuclear Gd(Ⅲ)-based complexes constructed by a multidentate diacylhydrazone ligand: Crystal structure, magnetocaloric effect, and biological activity[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(4): 761-772. doi: 10.11862/CJIC.20240344 shu

Two dinuclear Gd(Ⅲ)-based complexes constructed by a multidentate diacylhydrazone ligand: Crystal structure, magnetocaloric effect, and biological activity

Jia JI ¹ ,
Zhaoyang GUO ² ,
Wenni LEI ² ,
Jiawei ZHENG ² ,
Haorong QIN ² ,
Jiahong YAN ² ,
Yinling HOU ^1,, ,
Xiaoyan XIN ^3,, ,
Wenmin WANG ^1,,

1.
Key Laboratory of Preparation and Application of Micro & Mesoporous Nanomaterials of Guizhou Province, Kaili University, Kaili, Guizhou 556011, China
2.
College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China
3.
Civil Aviation Modern Industry College, Ningxia Institute of Science and Technology, Shizuishan, Ningxia 753000, China

Corresponding author: Yinling HOU, hyl0506@126.com Xiaoyan XIN, 1624889278@qq.com Wenmin WANG, wangwenmin0506@126.com
Received Date: 24 September 2024
Revised Date: 8 January 2025

Figures(9)

Two new binuclear Gd₂ complexes with the molecular formula [Gd₂(L)(H₂L)]·2CH₃OH·CH₃CN (1) and [Gd₂(H₂L)₂(dbm)₂]·6CH₃CN (2) (Hdbm=dibenzoylmethane) have been obtained by using a large conjugated diacylhydrazone organic ligand N′, N‴-(1E, 1′E)-(1, 10-phenanthroline-2, 9-diyl)bis(methaneylylidene) bis (2-hydroxy-benzohydrazide) (H₄L) reacting with Gd(NO₃)₃·6H₂O or Gd(dbm)₃·2H₂O. Structure studies reveal that Gd₂ complexes 1 and 2 belong to a triclinic crystal system with space group P1. Nevertheless, they show different molecule structures. 1 displays a cattail leaf fan shape, while 2 displays a pinwheel-shaped cage. Magnetic properties researches suggest that the two Gd₂ complexes displayed different magnetic refrigeration (-ΔS_m=23.35 and 15.09 J·kg^-1·K^-1 for 1 and 2, respectively). In addition, the synergistic interaction between ligand and Ln(Ⅲ) ions, promotes the two Gd₂ complexes showing excellent antibacterial activity. When the Gd₂ complexes interact with DNA, the Gd₂ complexes mainly insert or cut DNA.
- dinuclear Gd₂ complexes,
- crystal structure,
- magnetic refrigeration,
- antibacterial activity,
- DNA binding
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沈阳化工大学材料科学与工程学院沈阳 110142