Aufbau vs. Non-Aufbau Ground States in Two-Coordinate d7 Single-Molecule Magnets

2021 ◽  
Author(s):  
Dylan Errulat ◽  
Katie L. M. Harriman ◽  
Diogo Alves Galico ◽  
Jeffrey S. Ovens ◽  
Akseli Mansikkamäki ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Single Molecule ◽  
Ground States ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Electronic Configurations ◽  
Large Angular Momentum

Single-molecule magnets (SMMs) with d7 electronic configurations often require designer ligands to satisfy the metal's electronic conditions to achieve large angular momentum. Herein, the slow relaxation of the magnetization in...

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.

scholarly journals Slow Relaxation of the Magnetization in Bis-Decorated Chiral Helicene-Based Coordination Complexes of Lanthanides

2018 ◽  
Vol 4 (3) ◽  
pp. 39 ◽  
Author(s):  
Jessica Flores Gonzalez ◽  
Vincent Montigaud ◽  
Nidal Saleh ◽  
Olivier Cador ◽  
Jeanne Crassous ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Single Molecule ◽  
Crystalline Phase ◽  
Coordination Complexes ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Racemic Form

The complexes [Ln2(hfac)6(L)]·nC6H14 (Ln = Dy (1) n = 0, Yb (2) n = 1) with the L chiral 3,14-di-(2-pyridyl)-4,13-diaza[6]helicene ligand (hfac− = 1,1,1,5,5,5-hexafluoroacetylacetonate) have been synthesized in their racemic form and structurally and magnetically characterized. Both complexes behave as field-induced single molecule magnets in the crystalline phase. These magnetic properties were rationalized by ab initio calculations.

Switching slow relaxation in a MnIII3MnIV cluster: an example of grafting single-molecule magnets onto polyoxometalates

2010 ◽  
Vol 46 (16) ◽  
pp. 2760 ◽  
Author(s):  
Xikui Fang ◽  
Manfred Speldrich ◽  
Helmut Schilder ◽  
Rui Cao ◽  
Kevin P. O'Halloran ◽  
...  
Keyword(s):  
Single Molecule ◽  
Slow Relaxation ◽  
Single Molecule Magnets

scholarly journals Synthesis, structure, magnetic and luminescence properties of two dysprosium single-molecule magnets based on phenoxide dye ligands

CrystEngComm ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 1909-1913
Author(s):  
Jérôme Long ◽  
Alexander N. Selikhov ◽  
Ekaterina Mamontova ◽  
Konstantin A. Lyssenko ◽  
Yannick Guari ◽  
...  
Keyword(s):  
Single Molecule ◽  
Slow Relaxation ◽  
Luminescence Properties ◽  
Single Molecule Magnets

We report two dysprosium complexes based on phenoxide dye ligands and showing slow relaxation of their magnetization.

A remarkable energy barrier for spin reversal in a field induced dinuclear ytterbium single molecule magnet

2021 ◽  
Vol 50 (39) ◽  
pp. 13666-13670
Author(s):  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Crystal Fields ◽  
Spin Reversal

Strong equatorial and weak axial crystal fields enhance the energy barrier for slow relaxation of magnetization in Yb-based single molecule magnets.

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.

Reduced Anionic Mn12Molecules with Half-Integer Ground States as Single-Molecule Magnets

1999 ◽  
Vol 38 (23) ◽  
pp. 5329-5340 ◽  
Author(s):  
Sheila M. J. Aubin ◽  
Ziming Sun ◽  
Luca Pardi ◽  
J. Krzystek ◽  
Kirsten Folting ◽  
...  
Keyword(s):  
Single Molecule ◽  
Ground States ◽  
Single Molecule Magnets ◽  
Half Integer

ChemInform Abstract: Switching Slow Relaxation in a MnIII3MnIV Cluster: An Example of Grafting Single-Molecule Magnets onto Polyoxometalates.

ChemInform ◽  
2010 ◽  
Vol 41 (28) ◽  
pp. no-no
Author(s):  
Xikui Fang ◽  
Manfred Speldrich ◽  
Helmut Schilder ◽  
Rui Cao ◽  
Kevin P. O'Halloran ◽  
...  
Keyword(s):  
Single Molecule ◽  
Slow Relaxation ◽  
Single Molecule Magnets

scholarly journals Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 1190
Author(s):  
Samia Benmansour ◽  
Antonio Hernández-Paredes ◽  
María Bayona-Andrés ◽  
Carlos J. Gómez-García
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Related Compound ◽  
Interlayer Space ◽  
Magnetic Measurements ◽  
Three Dimensional ◽  
Slow Relaxation ◽  
Two Dimensional ◽  
Single Molecule Magnets ◽  
Solvent Molecules

The search for two- and three-dimensional materials with slow relaxation of the magnetization (single-ion magnets, SIM and single-molecule magnets, SMM) has become a very active area in recent years. Here we show how it is possible to prepare two-dimensional SIMs by combining Dy(III) with two different anilato-type ligands (dianions of the 3,6-disubstituted-2,5-dihydroxy-1,4-benzoquinone: C6O4X22−, with X = H and Cl) in dimethyl sulfoxide (dmso). The two compounds prepared, formulated as: [Dy2(C6O4H2)3(dmso)2(H2O)2]·2dmso·18H2O (1) and [Dy2(C6O4Cl2)3(dmso)4]·2dmso·2H2O (2) show distorted hexagonal honeycomb layers with the solvent molecules (dmso and H2O) located in the interlayer space and in the hexagonal channels that run perpendicular to the layers. The magnetic measurements of compounds 1, 2 and [Dy2(C6O4(CN)Cl)3(dmso)6] (3), a recently reported related compound, show that the three compounds present slow relaxation of the magnetization. In compound 1 the SIM behaviour does not need the application of a DC field whereas 2 and 3 are field-induced SIM (FI-SIM) since they show slow relaxation of the magnetization when a DC field is applied. We discuss the differences observed in the crystal structures and magnetic properties based on the X group of the anilato ligands (H, Cl and Cl/CN) in 1–3 and in the recently reported derivative [Dy2(C6O4Br2)3(dmso)4]·2dmso·2H2O (4) with X = Br, that is also a FI-SIM.

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