Dinuclear Rare-Earth β-Diketiminates with Bridging
The date of：
2024-12-27
viewed:
37
Dinuclear Rare-Earth β-Diketiminates with Bridging 3,5-Ditert-butyl-catecholates: Synthesis, Structure, and Single-Molecule Magnet Properties
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.
Hot News
/
Related to recommend
2026
-
07
-
17
Click on the number of times:
0
Hybrid Solvation Model for Analyzing the Binding of Yttrium and Calcium Cations to the Lanmodulin Protein Using the Fragment Molecular Orbital Method 来源：ACS PublicationsA hybrid solvation model combin...
2026
-
07
-
16
Click on the number of times:
0
来源：ACS PublicationsChemically flexible A2B2O7 oxides are attractive candidates for designing structure-specific functional materials by judicious substitution. However, modulating functionality by sub...
2026
-
07
-
16
Click on the number of times:
0
来源：ACS PublicationsRational design of Eu2+-activated red phosphors under visible light excitation remains a critical challenge in various fields such as photonics, optoelectronics, and white-light-emi...
2026
-
07
-
15
Click on the number of times:
0
来源：ACS PublicationsPolaron formation has emerged as an important mechanism for unconventional luminescence in metal halide semiconductors. Here, we show that incomplete rare-earth-ion doping in the ze...