双齿螯合配体- tb (III) -Fe （II）三核化合物的慢磁化弛豫

IF 1.1 3区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Coordination Chemistry Pub Date : 2024-12-08 DOI:10.1134/S107032842460027X

B. Y. Li, H. M. Dong, H. D. Li, S. J. Zhang

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引用次数: 0

摘要

三核[Fe2Tb]（对于Fe（II）和Tb(III)）簇，式为[Tb(HFac)3(Fe- no - butan)] (HFac =六氟乙酰丙酮；基于氮氧化双齿螯合配体的fe - no - buan = bi（二茂铁基甲基）-2,3-bi（n -氧化物）-2,3-二甲基丁烷)，由两个抗磁性二茂铁基段和一个顺磁性[Tb(HFac)3]单元组成，并进行了结构表征。磁性研究表明，[Fe2Tb]化合物表现出场致慢磁弛豫行为，有效势垒Δeff/kB≈12.80 K，来源于孤立的各向异性Tb3+离子。

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Slow Magnetization Relaxation in a Bidentate Chelate Ligand–Tb(III)–Fe(II) Trinuclear Compound

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Slow Magnetization Relaxation in a Bidentate Chelate Ligand–Tb(III)–Fe(II) Trinuclear Compound

A trinuclear [Fe₂Tb] (for Fe(II) and Tb(III)) cluster, with the formula of [Tb(HFac)₃(Fe-NO-Butan)] (HFac = hexafluoroacetylacetonate; Fe-NO-Butan = bi(ferrocenylmethyl)-2,3-bi(N-oxide)-2,3-dimethylbutan) based on a nitrogen oxidation bidentate chelate ligand, has been successfully constructed and structurally characterized, which is composed of two diamagnetic ferrocenyl segments and a paramagnetic [Tb(HFac)₃] unit. Magnetic investigation reveals that [Fe₂Tb] compound exhibits field-induced slow magnetic relaxation behavior with effective barrier Δ_eff/k_B ≈ 12.80 K, deriving from isolated anisotropic Tb³⁺ ion.

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来源期刊

Russian Journal of Coordination Chemistry 化学-无机化学与核化学

CiteScore

2.40

自引率

15.80%

发文量

审稿时长

7.2 months

期刊介绍： Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.