scholarly journals Luminescent Schiff-Base Lanthanide Single-Molecule Magnets: The Association Between Optical and Magnetic Properties

2019 ◽  
Vol 7 ◽  
Author(s):  
Jérôme Long
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Optical And Magnetic Properties

Ligand ratio/solvent-influenced syntheses, crystal structures, and magnetic properties of polydentate Schiff base ligand-Dy(iii) compounds with β-diketonate ligands as co-ligands

2019 ◽  
Vol 48 (33) ◽  
pp. 12466-12481 ◽  
Author(s):  
Sheng Zhang ◽  
Wenjiao Mo ◽  
Zengqi Zhang ◽  
Fei Gao ◽  
Lei Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Crystal Structures ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Single Molecule Magnets ◽  
Magnetic Dynamics ◽  
Synthesis Conditions ◽  
Ligand Ratio

Tuning the synthesis conditions and further regulating the magnetic dynamics of single-molecule magnets (SMMs) are crucial challenges for chemists.

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.

scholarly journals High-Coordinate Mononuclear Ln(III) Complexes: Synthetic Strategies and Magnetic Properties

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Joydev Acharya ◽  
Pankaj Kalita ◽  
Vadapalli Chandrasekhar
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Fine Tuning ◽  
Coordination Geometry ◽  
Single Molecule Magnets ◽  
Magnetization Relaxation ◽  
Quantum Tunneling Of Magnetization ◽  
Structural Correlation ◽  
High Coordination Number ◽  
High Coordination

Single-molecule magnets involving monometallic 4f complexes have been investigated extensively in last two decades to understand the factors that govern the slow magnetization relaxation behavior in these complexes and to establish a magneto-structural correlation. The prime goal in this direction is to suppress the temperature independent quantum tunneling of magnetization (QTM) effect via fine-tuning the coordination geometry/microenvironment. Among the various coordination geometries that have been pursued, complexes containing high coordination number around Ln(III) are sparse. Herein, we present a summary of the various synthetic strategies that were used for the assembly of 10- and 12-coordinated Ln(III) complexes. The magnetic properties of such complexes are also described.

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.

Effects of Pressure on Two-Dimensional Networked Single-Molecule Magnets Exhibiting AC-Field-Switchable Magnetic Properties

2012 ◽  
Vol 81 (6) ◽  
pp. 064716 ◽  
Author(s):  
Masaki Mito ◽  
Masashi Ogawa ◽  
Hiroyuki Deguchi ◽  
Masahiro Yamashita ◽  
Hitoshi Miyasaka
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Two Dimensional ◽  
Single Molecule Magnets ◽  
Ac Field

scholarly journals Multireference Ab Initio Studies of Magnetic Properties of Terbium-Based Single-Molecule Magnets

2019 ◽  
Vol 123 (32) ◽  
pp. 6996-7006 ◽  
Author(s):  
Ryan Pederson ◽  
Aleksander L. Wysocki ◽  
Nicholas Mayhall ◽  
Kyungwha Park
Keyword(s):  
Magnetic Properties ◽  
Ab Initio ◽  
Single Molecule ◽  
Single Molecule Magnets

Single-molecule magnets under dc field with an anion effect: self-assembly of pure dysprosium(iii) metallacycles

2021 ◽  
Vol 50 (1) ◽  
pp. 262-269
Author(s):  
Jianfeng Wu ◽  
Qianqian Yang ◽  
Haoyu Wang ◽  
Yan Ge ◽  
Jinkui Tang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Self Assembly ◽  
Structural Factors ◽  
Single Molecule Magnets ◽  
Anion Effect

The anion-adaptive self-assembly described here not only offers a facile approach to produce large single-molecule magnets but also provides an understanding of how structural factors affect the magnetic properties.

Magnetic and photo-physical investigations into DyIII and YbIII complexes involving tetrathiafulvalene ligand

2015 ◽  
Vol 2 (12) ◽  
pp. 1105-1117 ◽  
Author(s):  
K. Soussi ◽  
J. Jung ◽  
F. Pointillart ◽  
B. Le Guennic ◽  
B. Lefeuvre ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Single Molecule Magnets ◽  
Redox Active

Three TTF-based complexes have been elaborated using β-diketonate DyIII and YbIII precursors. [Yb(tta)3(L)]·2CH2Cl2 enlarges the scarce series of redox-active luminescent single-molecule magnets with correlation between emissive and magnetic properties.

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