Citation: Qin WANG, Yuan-Yuan LIU, Li NIU, Jing YAN, Yin-Ling HOU. Synthesis, Crystal Structure and Magnetic Properties of Dinuclear Dy(Ⅲ) Complex Based on Multidentate Schiff Base[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(3): 535-541. doi: 10.11862/CJIC.2022.042 shu

Synthesis, Crystal Structure and Magnetic Properties of Dinuclear Dy(Ⅲ) Complex Based on Multidentate Schiff Base

Qin WANG ¹ ,
Yuan-Yuan LIU ¹ ,
Li NIU ¹ ,
Jing YAN ¹ ,
Yin-Ling HOU ^2,,

1.
Department of Chemistry, Taiyuan Normal University, Jingzhong, Shanxi 030619, China
2.
School of Sciences, Kaili University, Kaili, Guizhou 556011, China

Corresponding author: Yin-Ling HOU, hyl0506@126.com
Received Date: 24 July 2021
Revised Date: 20 November 2021

Figures(9)

A new Dy₂ complex [Dy₂(L)₂(acac)₂(CH₃CH₂OH)₂] (1) has been synthesized based on a multidentate Schiff base H₂L (H₂L=N'-(2-hydroxynaphthalen-1-ylmethylene)-2-(hydroxyimino)propanehydrazide) and β-diketone coligand Hacac (Hacac=acetylacetone). Complex 1 was characterized by single-crystal X-ray diffraction, elemental analysis and further investigated by magnetic measurements. Structural analysis reveals that complex 1 is a centro-symmetric dinuclear dysprosium complex and the asymmetric unit contains a Dy(Ⅲ) ion, one L^2- ligand, one acac^- coligand, and an ethanol molecule. Each of the Dy(Ⅲ) centers is eight-coordinate and adopts a distorted bicapped trigonal-prismatic coordination geometry. Magnetic studies suggest the existence of weak antiferromagnetic interactions between the Dy(Ⅲ) ions in 1. In addition, the slow magnetic relaxation behaviors are observed in 1 with the magnetic energy barrier ΔE/k_B=14.52 K and the pre-exponential factor τ₀=7.58×10^-6 s.
- dinulcear Dy(Ⅲ) complex,
- eight-coordinate,
- bicapped trigonal-prismatic,
- antiferromagnetic interaction,
- slow magnetic relaxation behavior
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