邻苯二乙酯配合物Ce（III）的合成、结构和磁性能

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-02-01 DOI:10.1016/j.solidstatesciences.2024.107798

Lenka Krešáková , Miroslava Litecká , Itziar Oyarzabal , Róbert Tarasenko , Hryhorii Titikov , Martin Orendáč , Juraj Černák

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引用次数: 0

摘要

在溶剂热条件下，Ce（III）配合物{[Ce2(oPDA)3(H2O)2]·2H2O}n(1)与o给体配体H2oPDA（邻苯二乙酸）形成单晶。1的晶体结构是一维的，由oPDA2−离子连接的Ce（III）离子链作为具有桥接和螯合功能的五齿配体形成。1中的Ce（III）中心原子被来自4个不同oPDA2 -配体的8个氧原子和产o80给体的水配体的1个氧原子不配位。静磁化率和磁化率的研究表明，地面和第一激发重态之间存在Δ/kB = 317 K的能量差。在交变磁化率的研究中发现了场致慢磁弛豫。弛豫时间随温度的变化证实了量子隧道和拉曼弛豫过程共存，且拉曼弛豫系数反常。

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Ce(III) complex with o-phenylenediacetato ligand: Synthesis, structure and magnetic properties

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Ce(III) complex with o-phenylenediacetato ligand: Synthesis, structure and magnetic properties

Single crystals of Ce(III) complex {[Ce₂(oPDA)₃(H₂O)₂]·2H₂O}_n (1) with O-donor ligand H₂oPDA (o-phenylenediacetic acid) were formed under solvothermal conditions. The crystal structure of 1 is one-dimensional and formed by chains of the Ce(III) ions linked via oPDA²⁻ dianions acting as pentadentate ligands with bridging and chelating functions. The Ce(III) central atom in 1 is nonacoordinated by eight oxygen atoms from four different oPDA²⁻ ligands and one oxygen atom of the aqua ligand yielding O₈O donor set. The investigation of the static susceptibility and magnetization suggested Δ/k_B = 317 K energy difference between the ground and the first excited doublet. Field induced slow magnetic relaxation was revealed in the investigation of alternating susceptibility. The alternation of the relaxation time with temperature confirmed the coexistence of quantum tunneling and Raman relaxation processes with anomalous coefficients for Raman relaxation.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.