Dinuclear Rare-Earth β-Diketiminates with Bridging 3,5-Ditert-butyl-catecholates: Synthesis, Structure, and Single-Molecule Magnet Properties

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2024-12-21 DOI:10.1021/acs.inorgchem.4c03278

Svetlana V. Klementyeva, Michael T. Gamer, Michael Schulze, Nithin Suryadevara, Artem S. Bogomyakov, Pavel A. Abramov, Sergey N. Konchenko, Mario Ruben, Wolfgang Wernsdorfer, Eufemio Moreno-Pineda

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引用次数: 0

Abstract

The dinuclear β-diketiminato complex [L¹ClDy(μ-Cl)₃DyL¹(THF)] (1) (L¹ = {2,6-ⁱPr₂C₆H₃–NC(Me)CHC(Me)N-2,6-ⁱPr₂C₆H₃}⁻) was obtained by reaction of DyCl₃ with KL¹ in a molar ratio of 1:1 and used for the preparation of the mixed-ligand complex [L¹Dy(μ-3,5-Cat)]₂ (2) by salt metathesis reaction with 3,5-CatK₂ (3,5-Cat −3,5-di-tert-butyl-catecholate). Reactions of 3,5-CatNa₂ with [L²LnCl₂(THF)₂] (Ln³⁺ = Dy, Y) ligated with the less bulky ligand L² = {2,4,6-Me₃C₆H₂–NC(Me)CHC(Me)N-2,4,6-Me₃C₆H₂}⁻ afforded the mixed-ligand THF-containing complexes [L²Ln(μ-3,5-Cat)(THF)]₂ (Ln³⁺ = Dy (3a), Y (3b)). All new complexes were fully characterized, and the solid-state structures were determined by single-crystal X-ray diffraction. Magnetic measurements revealed single-molecule magnet behavior for the dysprosium complexes. Sub-Kelvin μSQUID studies confirm the SMM character of the systems, while CASSCF calculation along with simulation of the experimental data yields an antiferromagnetic interaction operating between the Dy³⁺ ions.

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.