Mn4 Single-Molecule-Magnet-Based Polymers of a One-Dimensional Helical Chain and a Three-Dimensional Network: Syntheses, Crystal Structures, and Magnetic Properties

2012 ◽  
Vol 51 (24) ◽  
pp. 13171-13180 ◽  
Author(s):  
Hui-Lien Tsai ◽  
Chen-I Yang ◽  
Wolfgang Wernsdorfer ◽  
Siang-Hua Huang ◽  
Siang-Yu Jhan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Single Molecule ◽  
Three Dimensional ◽  
Helical Chain ◽  
Single Molecule Magnet ◽  
One Dimensional ◽  
Dimensional Network

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.

Self-assembled molecular magnets from discrete dimer to one-dimensional helical chain: Syntheses, crystal structures and magnetic properties

Polyhedron ◽  
2007 ◽  
Vol 26 (15) ◽  
pp. 4463-4469 ◽  
Author(s):  
Heng Xu ◽  
Cheng He ◽  
Yuan-Xia Sui ◽  
Xiao-Ming Ren ◽  
Li-Min Guo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Molecular Magnets ◽  
Helical Chain ◽  
One Dimensional ◽  
Self Assembled

The coordination chemistry of two symmetric fluorene-based organic ligands with cuprous chloride

2013 ◽  
Vol 69 (12) ◽  
pp. 1488-1493 ◽  
Author(s):  
Yan-Fei Liu ◽  
Chao-Wei Zhao ◽  
Jian-Ping Ma ◽  
Qi-Kui Liu ◽  
Yu-Bin Dong
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Helical Chain ◽  
Cuprous Chloride ◽  
Dimensional Chain ◽  
Two Dimensional ◽  
One Dimensional ◽  
Dimensional Network ◽  
The Difference ◽  
The One

Two novel symmetric fluorene-based ligands, namely, 2,7-bis(1H-imidazol-1-yl)-9,9-dimethyl-9H-fluorene [L1 or (I), C21H18N4] and 2,7-bis(1H-imidazol-1-yl)-9,9-dipropyl-9H-fluorene (L2), have been used to construct the coordination polymerscatena-poly[[dichloridodicopper(I)(Cu—Cu)]-μ-2,7-bis(1H-imidazol-1-yl)-9,9-dimethyl-9H-fluorene], [Cu2Cl2(C21H18N4)]n, (II), andcatena-poly[[tetra-μ2-chlorido-tetracopper(I)]-bis[μ-2,7-bis(1H-imidazol-1-yl)-9,9-dipropyl-9H-fluorene]], [Cu4Cl4(C25H26N4)2]n, (III). There are three types of C—H...N hydrogen bonds in (I), resulting a two-dimensional network in theabplane, including a chiral helical chain along thebaxis. Compounds (II) and (III) are related one-dimensional polymers. In both, CuIatoms connect the symmetric ligands (L1 orL2) into a one-dimensional chain. In (II), the {[CuICl2]−} unit, acting as a co-anion, adheres to the one-dimensional chain through a weak Cu...Cu interaction. However, in (III), the {[CuI2Cl4]2−} unit links two different chains into a one-dimensional rope-ladder-type chain. In addition, there are C—H...Cl hydrogen bonds and π–π interactions in the extended structures of (II) and (III), the difference is that the chains in (II) are linked into a two-dimensional network while the chains in (III) are stacked into a three-dimensional framework.

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

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.

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