[Ce(OtBu)Cl(THF)5](BPh4)与较小的稀土类似物的结构比较。

IF 0.7 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Acta Crystallographica Section C Structural Chemistry Pub Date : 2024-11-01 Epub Date: 2024-10-28 DOI:10.1107/S2053229624009872

Jarrod R Thomas, Kavisha A Sarma, Marcus J Giansiracusa, Scott A Sulway

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引用次数: 0

摘要

引入(叔丁氧羰基)氯戊二(四氢呋喃)镧系元素(III)四苯基硼酸四氢呋喃二醇酯的铈(III)类似物(1-Ce，Ln = Ce)、[Ln{OC(CH3)3}Cl(C4H8O)5][B(C6H5)4]-2C4H8O 或 [Ln(OtBu)Cl(THF)5](BPh4)-2THF（1-Ln）。1-Ce 中的阳离子是目标化合物，因为铈（III）离子具有在轴向点电荷晶体场中表现出缓慢磁弛豫的标准，类似于 1-Dy 中的镝（III）离子。交流磁感应强度实验显示 1-Ce 没有这种行为，这使得铈基 SMM 的可行性受到质疑。

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Structural comparison of [Ce(O^tBu)Cl(THF)₅](BPh₄) to smaller rare earth analogues.

The introduction of the cerium(III) analogue (1-Ce, Ln = Ce) of (tert-butoxido)chloridopentakis(tetrahydrofuran)lanthanide(III) tetraphenylborate tetrahydrofuran disolvate, [Ln{OC(CH₃)₃}Cl(C₄H₈O)₅][B(C₆H₅)₄]·2C₄H₈O or [Ln(O^tBu)Cl(THF)₅](BPh₄)·2THF (1-Ln) has been achieved with a structural comparison between the existing solid-state structures of other rare earth analogues and the title compound at 100 and 180 K. The cation in 1-Ce is targeted as the cerium(III) ion possesses the criteria to exhibit slow magnetic relaxation in axial point-charge crystal fields, akin to the dysprosium(III) ion in 1-Dy. AC magnetic susceptibility experiments reveal no such behaviour for 1-Ce, putting the viability of cerium-based SMMs into question.

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来源期刊

Acta Crystallographica Section C Structural Chemistry CHEMISTRY, MULTIDISCIPLINARYCRYSTALLOGRAPH-CRYSTALLOGRAPHY

CiteScore

1.60

自引率

12.50%

发文量

148

期刊介绍： Acta Crystallographica Section C: Structural Chemistry is continuing its transition to a journal that publishes exciting science with structural content, in particular, important results relating to the chemical sciences. Section C is the journal of choice for the rapid publication of articles that highlight interesting research facilitated by the determination, calculation or analysis of structures of any type, other than macromolecular structures. Articles that emphasize the science and the outcomes that were enabled by the study are particularly welcomed. Authors are encouraged to include mainstream science in their papers, thereby producing manuscripts that are substantial scientific well-rounded contributions that appeal to a broad community of readers and increase the profile of the authors.