Slow magnetic relaxation and proton conduction in a highly hydrogen-bonded dinuclear holmium(III) complex

Wu，Dong Qing1; Fan，Zhuaizhuai1; Zhang，Qian2; Yi，Lv Yan2; Gu，Qingmei1; Dong，Jin2; Huang，Long2; Yang，Jiong3,4; Shao，Dong2; Zhai，Bin1

2024-06-15

10.1016/j.molstruc.2024.137874

Journal of Molecular Structure   影响因子和分区

0022-2860

Multifunctional magnetic-electrical materials are highly interesting, such as proton-conductive lanthanide single-ion magnets (SIMs). Herein, we reported the synthesis, crystal structure, magnetic and electrical properties of a bifunctional binuclear holmium(III) complex, [Ho(Hdobdc)(HO)]·(Hdobdc)·8HO (Ho, Hdobdc = 2,5-dioxodo-1,4-benzenedicarboxylate), which was constructed by a hydroxy‑functionalizd dicarboxybenzene and holmium(III) ions. Interestingly, single-crystal X-ray diffraction analysis reveals a highly hydrogen-bonded supramolecular structure and highly oxygenated site were formed within the complex. Magnetic measurements indicate the complex exhibits filed-induced slow magnetic relaxation property. Additionally, the impedance spectroscopy measurements show the complex also exhibits humidity- and temperature-dependent proton conduction behaviour via the Grotthus mechanism. These results support a proton-conductive holmium(III) single-ion magnet of Ho. This work not only provides the first bifunctional Ho complexes showing slow magnetic relaxation and proton-conducting behaviour but also a supramolecular way for advanced magnetic-electrical systems linking slow magnetic relaxation with unique proton conducting behaviour exploiting a possible cooperative behaviour.

Holmium(III) Hydrogen-bonded structure Magnetic relaxation Proton conduction Single-ion magnet

SCI ; EI

英语

其他

CHEMISTRY

2-s2.0-85185879827

Scopus

1.Engineering Research Center of Photoelectric Functional Material,School of Chemistry and Chemical Engineering,Shangqiu Normal University,Shangqiu,476000,China
2.Hubei Key Laboratory of Processing and Application of Catalytic Materials,College of Chemistry and Chemical Engineering,Huanggang Normal University,Huanggang,438000,China
3.Department of Chemistry,Southern University of Science and Technology (SUSTech),Shenzhen,518055,China
4.Institut des Matériaux Poreux de Paris,UMR 8004 Ecole Normale Supérieure,ESPCI Paris,CNRS,PSL University,Paris,France

Wu，Dong Qing,Fan，Zhuaizhuai,Zhang，Qian,et al. Slow magnetic relaxation and proton conduction in a highly hydrogen-bonded dinuclear holmium(III) complex[J]. Journal of Molecular Structure,2024,1306.

Wu，Dong Qing.,Fan，Zhuaizhuai.,Zhang，Qian.,Yi，Lv Yan.,Gu，Qingmei.,...&Zhai，Bin.(2024).Slow magnetic relaxation and proton conduction in a highly hydrogen-bonded dinuclear holmium(III) complex.Journal of Molecular Structure,1306.

Wu，Dong Qing,et al."Slow magnetic relaxation and proton conduction in a highly hydrogen-bonded dinuclear holmium(III) complex".Journal of Molecular Structure 1306(2024).