scholarly journals Dysprosium Single-Molecule Magnets with Bulky Schiff Base Ligands: Modification of the Slow Relaxation of the Magnetization by Substituent Change

2018 ◽  
Vol 25 (2) ◽  
pp. 474-478 ◽  
Author(s):  
Jérôme Long ◽  
Ivan V. Basalov ◽  
Natalia V. Forosenko ◽  
Konstantin A. Lyssenko ◽  
Ekaterina Mamontova ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Schiff Base Ligands

Bis-phenoxido and bis-acetato bridged heteronuclear {CoIIIDyIII} single molecule magnets with two slow relaxation branches

2016 ◽  
Vol 45 (17) ◽  
pp. 7510-7520 ◽  
Author(s):  
Susanta Hazra ◽  
Ján Titiš ◽  
Dušan Valigura ◽  
Roman Boča ◽  
Sasankasekhar Mohanta
Keyword(s):  
Schiff Base ◽  
Crystal Structures ◽  
Single Molecule ◽  
Magnetic Behaviour ◽  
Slow Relaxation ◽  
Single Molecule Magnets

Crystal structures and single molecule magnetic behaviour of two bis(μ-phenoxido)–bis(μ-acetato) {CoIIIDyIII} complexes, derived from the hexadentate Schiff base N,N′-ethylenebis(3-ethoxy- or 3-methoxysalicylaldimine), are described.

scholarly journals Lanthanide-Based Single-Molecule Magnets Derived from Schiff Base Ligands of Salicylaldehyde Derivatives

Inorganics ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 66
Author(s):  
Mamo Gebrezgiabher ◽  
Yosef Bayeh ◽  
Tesfay Gebretsadik ◽  
Gebrehiwot Gebreslassie ◽  
Fikre Elemo ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Magnetic Behavior ◽  
Point Of View ◽  
Schiff Base Complexes ◽  
Magnetic Interactions ◽  
Single Molecule Magnets ◽  
Schiff Base Ligands ◽  
Synthetic Strategy ◽  
Slow Magnetic Relaxation

The breakthrough in Ln(III)-based SMMs with Schiff base ligands have been occurred for the last decade on account of their magnetic behavior, anisotropy and relaxation pathways. Herein, we review the synthetic strategy, from a structural point of view and magnetic properties of mono, di, tri and polynuclear Ln(III)-based single-molecule magnets mainly with Schiff bases of Salicylaldehyde origin. Special attention has been given to some important breakthroughs that are changing the perspective of this field with a special emphasis on slow magnetic relaxation. An overview of 50 Ln(III)-Schiff base complexes with SMM behavior, covering the period 2008–2020, which have been critical in understanding the magnetic interactions between the Ln(III)-centers, are presented and discussed in detail.

Step-by-Step and Competitive Assembly of Two Dy(III) Single-Molecule Magnets with Their Performance Tuned by Schiff Base Ligands

2019 ◽  
Vol 19 (9) ◽  
pp. 5369-5375 ◽  
Author(s):  
Hai-Ling Wang ◽  
Jin-Mei Peng ◽  
Zhong-Hong Zhu ◽  
Kai-Qiang Mo ◽  
Xiong-Feng Ma ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Schiff Base Ligands

scholarly journals A Series of Novel Pentagonal-Bipyramidal Erbium(III) Complexes with Acyclic Chelating N3O2 Schiff-Base Ligands: Synthesis, Structure, and Magnetism

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6908
Author(s):  
Tamara A. Bazhenova ◽  
Vyacheslav A. Kopotkov ◽  
Denis V. Korchagin ◽  
Yuriy V. Manakin ◽  
Leokadiya V. Zorina ◽  
...  
Keyword(s):  
Experimental Study ◽  
Magnetic Properties ◽  
Schiff Base ◽  
Theoretical Analysis ◽  
Single Molecule ◽  
Theoretical Study ◽  
Magnetic Measurements ◽  
Single Molecule Magnets ◽  
Schiff Base Ligands ◽  
Axial Ligands

A series of six seven-coordinate pentagonal-bipyramidal (PBP) erbium complexes, with acyclic pentadentate [N3O2] Schiff-base ligands, 2,6-diacetylpyridine bis-(4-methoxybenzoylhydrazone) [H2DAPMBH], or 2,6-diacethylpyridine bis(salicylhydrazone) [H4DAPS], and various apical ligands in different charge states were synthesized: [Er(DAPMBH)(C2H5OH)Cl] (1); [Er(DAPMBH)(H2O)Cl]·2C2H5OH (2); [Er(DAPMBH)(CH3OH)Cl] (3); [Er(DAPMBH)(CH3OH)(N3)] (4); [(Et3H)N]+[Er(H2DAPS)Cl2]− (5); and [(Et3H)N]+[Y0.95Er0.05(H2DAPS)Cl2]− (6). The physicochemical properties, crystal structures, and the DC and AC magnetic properties of 1–6 were studied. The AC magnetic measurements revealed that most of Compounds 1–6 are field-induced single-molecule magnets, with estimated magnetization energy barriers, Ueff ≈ 16–28 K. The experimental study of the magnetic properties was complemented by theoretical analysis based on ab initio and crystal field calculations. An experimental and theoretical study of the magnetism of 1–6 shows the subtle impact of the type and charge state of the axial ligands on the SMM properties of these complexes.

Two Dy(III) Single-Molecule Magnets with Their Performance Tuned by Schiff Base Ligands

2019 ◽  
Vol 58 (2) ◽  
pp. 1191-1200 ◽  
Author(s):  
Shui Yu ◽  
Zhaobo Hu ◽  
Zilu Chen ◽  
Bo Li ◽  
Yi-Quan Zhang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Schiff Base Ligands

Designing asymmetric Dy2 single-molecule magnets with two-step relaxation processes by the modification of the coordination environments of Dy(iii) ions

2020 ◽  
Vol 49 (26) ◽  
pp. 8976-8984
Author(s):  
Yuan Huang ◽  
Jia-Xin Li ◽  
Yu Ge ◽  
Xia-Mei Zhang ◽  
Yang Xu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet

The reaction of Dy(NO3)3·6H2O and an asymmetric Schiff-base ligand H2L afforded two asymmetric dinuclear compound. Both complexes exhibit single-molecule magnet behavior with two-step slow relaxation processes.

Cu(ii)–Dy(iii) and Co(iii)–Dy(iii) based single molecule magnets with multiple slow magnetic relaxation processes in the Cu(ii)–Dy(iii) complex

2015 ◽  
Vol 44 (29) ◽  
pp. 13242-13249 ◽  
Author(s):  
Malay Dolai ◽  
Mahammad Ali ◽  
Ján Titiš ◽  
Roman Boča
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Magnetic Relaxation ◽  
Magnetic Behaviour ◽  
Dinuclear Complexes ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Slow Magnetic Relaxation

Two CuII–DyIII and CoIII–DyIII dinuclear complexes of a Schiff base ligand (H3L) exhibit single-molecule magnetic behaviour with multiple slow magnetic relaxation processes for the former.

Magnetic field and dilution effects on the slow relaxation of {Er3} triangle-based arsenotungstate single-molecule magnets

2020 ◽  
Vol 49 (35) ◽  
pp. 12458-12465 ◽  
Author(s):  
Hanhan Chen ◽  
Lin Sun ◽  
Jinpeng Zhang ◽  
Zikang Xiao ◽  
Pengtao Ma ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Thermally Activated ◽  
Slow Magnetic Relaxation ◽  
Dilution Effects

Triangular {Er3} cluster containing POM exhibits field-induced two thermally activated relaxation processes. Whereas, the diamagnetic dilution sample indicates slow magnetic relaxation with the QTM being partially suppressed.

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