Enhancing single molecule magnet parameters. Synthesis, crystal structures and magnetic properties of mixed-valent Mn4SMMs

2006 ◽  
Vol 16 (26) ◽  
pp. 2579-2586 ◽  
Author(s):  
Ayuk M. Ako ◽  
Valeriu Mereacre ◽  
Ian J. Hewitt ◽  
Rodolphe Clérac ◽  
Lollita Lecren ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Single Molecule ◽  
Single Molecule Magnet

Synthesis, crystal structures and magnetic properties of a series of chair-like heterometallic [Fe4Ln2] (Ln = GdIII, DyIII, HoIII, and ErIII) complexes with mixed organic ligands

2019 ◽  
Vol 48 (35) ◽  
pp. 13472-13482 ◽  
Author(s):  
Hui-Sheng Wang ◽  
Qiao-Qiao Long ◽  
Zhao-Bo Hu ◽  
Lin Yue ◽  
Feng-Jun Yang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Single Molecule ◽  
Organic Ligands ◽  
Single Molecule Magnet

Four chair-like [Fe4Ln2] (Ln = Gd, Dy, Ho and Er) complexes with mixed organic ligands have been obtained. [Fe4Dy2] exhibits single molecule magnet behavior.

scholarly journals Crystal Structure and Magnetic Properties of Peacock–Weakley Type Polyoxometalates Na9[Ln(W5O18)2] (Ln = Tm, Yb): Rare Example of Tm(III) SMM

2020 ◽  
Vol 6 (4) ◽  
pp. 53
Author(s):  
Oleksandra Yu. Mariichak ◽  
Sandra Kaabel ◽  
Yevgen A. Karpichev ◽  
Georgiy M. Rozantsev ◽  
Serhii V. Radio ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Nitric Acid ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Crystal Structures ◽  
Single Molecule ◽  
Relaxation Processes ◽  
Single Molecule Magnet ◽  
Physico Chemical

We report Peacock–Weakley complexes, Na9[Ln(W5O18)2]∙35H2O, formed with Tm(III), 1, and Yb(III), 2. Their syntheses, physico-chemical characterizations, crystal structures, and magnetic properties are described. Ab initio calculations are also reported. These polyoxometalate (POM) complexes were obtained using original synthetic conditions where acidification was performed with a stoichiometric amount of nitric acid to an acidity of Z = ν(H+)/ν(WO42–) = 8/10 = 0.80. Both the Tm(III) and Yb(III) derivatives were found to exhibit field-induced slow relaxation of their magnetization likely controlled by Raman and Orbach relaxation processes. 1 is a rare example of a Tm(III)-based single-molecule magnet (SMM) and is a consequence of the oblate tetragonal anti-prismatic symmetry of the coordination sphere.

Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

2021 ◽  
Author(s):  
Matilde Fondo ◽  
Julio Corredoira-Vázquez ◽  
Ana M. Garcia-Deibe ◽  
Jesus Sanmartin Matalobos ◽  
Silvia Gómez-Coca ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Slow Magnetic Relaxation

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2·2THF, and the pyridine adducts Dy2·2Py and Ho2·2Py,...

scholarly journals A Dy(III) Fluorescent Single-Molecule Magnet Based on a Rhodamine 6G Ligand

Inorganics ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 51
Author(s):  
Lin Miao ◽  
Mei-Jiao Liu ◽  
Man-Man Ding ◽  
Yi-Quan Zhang ◽  
Hui-Zhong Kou
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Rhodamine 6G ◽  
Bond Angle ◽  
Magnetic Measurements ◽  
Single Molecule Magnet ◽  
Lanthanide Metals ◽  
Process Studies ◽  
Dual Functions

The complexes of lanthanide metals, especially dysprosium, can generally exhibit excellent magnetic properties. By means of modifying ligands, dual functions or even multi-functions can be achieved. Here, we synthesized an eight-coordinate Dy(III) complex 1, [Dy(HL-o)2(MeOH)2](ClO4)3·4.5MeOH, which is single-molecule magnet (SMM), and the introduction of the rhodamine 6G chromophore in the ring-opened ligand HL-o realizes ligand-centered fluorescence in addition to SMM. Magnetic measurements and ab initio calculations indicate that the magnetic relaxation for complex 1 should be due to the Raman relaxation process. Studies on magneto-structural correlationship of the rhodamine salicylaldehyde hydrazone Dy(III) complexes show that the calculated energy of the first Kramers Doublet (EKD1) is basically related to the Ophenoxy-Dy-Ophenoxy bond angle, i.e., the larger Ophenoxy-Dy-Ophenoxy bond angle corresponds to a larger EKD1.

Multifunctional properties of {CuII2LnIII2} systems involving nitrogen-rich nitronyl nitroxide: single-molecule magnet behavior, luminescence, magnetocaloric effects and heat capacity

2021 ◽  
Author(s):  
Hongdao Li ◽  
Pei Jing ◽  
Jiao Lu ◽  
Lu Xi ◽  
Qi Wang ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Magnetic Properties ◽  
Single Molecule ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Single Molecule Magnet ◽  
Luminescence Behavior ◽  
Multifunctional Properties

A family of 3d–4f heterometallic ring-shaped clusters on the basis of a nitrogen-rich nitronyl nitroxide radical have been obtained, and they feature polyfunctionality including magnetic properties, thermodynamics and luminescence behavior.

Synthesis, structure and magnetic properties of a decametallic Ni single-molecule magnet

2005 ◽  
pp. 5038 ◽  
Author(s):  
Guillem Aromí ◽  
Simon Parsons ◽  
Wolfgang Wernsdorfer ◽  
Euan K. Brechin ◽  
Eric J. L. McInnes
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Single Molecule Magnet

Heteronuclear Ni(ii)–Ln(iii) (Ln = La, Pr, Tb, Dy) complexes: synthesis and single-molecule magnet behaviour

2016 ◽  
Vol 45 (8) ◽  
pp. 3616-3626 ◽  
Author(s):  
Apoorva Upadhyay ◽  
Chinmoy Das ◽  
Stuart K. Langley ◽  
Keith S. Murray ◽  
Anant K. Srivastava ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Schiff Base ◽  
Crystal Structures ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Ac Magnetic Susceptibility ◽  
Frequency Dependent ◽  
Single Molecule Magnet

The crystal structures are reported for three heterometallic Ni2Ln and a Ni2Dy2 complex, using the Schiff base ligand 2-methoxy-6-[(E)-phenyliminomethyl] phenol. Detailed dc and ac magnetic susceptibility studies were reported for all the complexes. The complexes 3 and 4 shows frequency dependent out-of-phase susceptibility signals.

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