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A 3D Cu(ii) tetrazolate coordination polymer based on pentanuclear units with a large coercive field
Wu-Juan Sun1, Lei-Lei Li, Xiang-Yu Liu
1College of Chemistry and Chemical Engineering, Xi'an Shiyou University, No. 18, East Section Second Dianzi Road, Xi'an 710065, Shaanxi, China. xlzhang@xsyu.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|December 18, 2019
Summary
A new 3D coordination polymer exhibits unique magnetic properties. This copper-based material functions as a hard magnet with a critical temperature of 9.5 K.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Magnetism
Background:
- Coordination polymers offer tunable structures and properties.
- Copper(II) ions are known to exhibit diverse magnetic behaviors.
- Developing novel magnetic materials with unique characteristics is an ongoing research area.
Purpose of the Study:
- To synthesize and characterize a novel 3D coordination polymer.
- To investigate the magnetic properties of the synthesized compound.
- To explore its potential as a hard magnet.
Main Methods:
- Solvothermal synthesis using 1,2-bis(tetrazol-5-yl) ethane (BTZE) and copper sulfate.
- Structural characterization of the 3D coordination framework.
- Magnetic property analysis using direct-current and alternating-current magnetic susceptibilities from 2-300 K.
Main Results:
- A novel 3D coordination polymer, {[Cu4.5 (BTZE)1.5 (μ3-OH)3(μ-OH)(SO4)(H2O)1.5·4H2O]}n (1), was successfully synthesized.
- Compound (1) features triangular [Cu3(μ3-OH)] cluster-based magnetic Δ-chains forming a 3D framework.
- The material exhibits canted ferromagnetic behavior with a critical temperature (Tc) of 9.5 K and acts as a hard magnet with a coercive field of 2.3 kOe at 2 K.
Conclusions:
- The synthesized 3D coordination polymer displays unique magnetic properties, including hard magnetism.
- The observed magnetic behavior is attributed to the specific structural arrangement of copper ions and ligands.
- This study contributes to the development of novel magnetic materials with potential applications.
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