Syntheses, structures and magnetic properties of a series of mono- and di-nuclear dysprosium(iii)-crown-ether complexes: effects of a weak ligand-field and flexible cyclic coordination modes

2016 ◽  
Vol 3 (6) ◽  
pp. 798-807 ◽  
Author(s):  
You-Song Ding ◽  
Tian Han ◽  
Yue-Qiao Hu ◽  
Minwei Xu ◽  
Sen Yang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crown Ether ◽  
Magnetic Relaxation ◽  
Ligand Field ◽  
Coordination Modes ◽  
Crown Ether Complexes ◽  
Slow Magnetic Relaxation

Six Dy(iii)-crown-ether complexes show the effects of coordination anions and geometries on slow magnetic relaxation behaviours.

scholarly journals Slow Magnetic Relaxation in Lanthanoid Crown Ether Complexes: Interplay of Raman and Anomalous Phonon Bottleneck Processes

2018 ◽  
Vol 24 (55) ◽  
pp. 14768-14785 ◽  
Author(s):  
Elodie Rousset ◽  
Matteo Piccardo ◽  
Marie-Emmanuelle Boulon ◽  
Robert W. Gable ◽  
Alessandro Soncini ◽  
...  
Keyword(s):  
Crown Ether ◽  
Magnetic Relaxation ◽  
Phonon Bottleneck ◽  
Crown Ether Complexes ◽  
Slow Magnetic Relaxation

scholarly journals Divalent Thulium Crown Ether Complexes with Field-Induced Slow Magnetic Relaxation

2019 ◽  
Vol 58 (4) ◽  
pp. 2872-2880 ◽  
Author(s):  
Mathieu Xémard ◽  
Marie Cordier ◽  
Florian Molton ◽  
Carole Duboc ◽  
Boris Le Guennic ◽  
...  
Keyword(s):  
Crown Ether ◽  
Magnetic Relaxation ◽  
Crown Ether Complexes ◽  
Slow Magnetic Relaxation

Structures, fluorescence properties and magnetic properties of a series of rhombus-shaped LnIII4 clusters: magnetocaloric effect and single-molecule-magnet behavior

2019 ◽  
Vol 43 (33) ◽  
pp. 12941-12949 ◽  
Author(s):  
Wen-Min Wang ◽  
Li Zhang ◽  
Xian-Zhen Li ◽  
Li-Yuan He ◽  
Xin-Xin Wang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Magnetic Refrigeration ◽  
Fluorescence Properties ◽  
Relaxation Processes ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Slow Magnetic Relaxation

A family LnIII4 clusters were successfully synthesized and structurally characterized. Magnetic studies show that Gd4 cluster displays magnetic refrigeration, while Dy4 cluster demonstrates two distinct slow magnetic relaxation processes.

scholarly journals Nitronyl Nitroxide Biradical-Based Binuclear Lanthanide Complexes: Structure and Magnetic Properties

2020 ◽  
Vol 6 (4) ◽  
pp. 48
Author(s):  
Lu Xi ◽  
Jing Han ◽  
Xiaohui Huang ◽  
Licun Li
Keyword(s):  
Magnetic Properties ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Magnetic Data ◽  
Antiferromagnetic Coupling ◽  
Zero Field ◽  
Nitronyl Nitroxide ◽  
Ferromagnetic Exchange ◽  
Binuclear Structure ◽  
Slow Magnetic Relaxation

Employing a new nitronyl nitroxide biradical NITPhPzbis(NITPhPzbis = 5-(1-pyrazolyl)-1,3-bis(1’-oxyl-3’-oxido-4’,4’,5’,5’-tetramethyl-4,5-hydro-1H-imidazol-2-yl)benzene), a series of 2p-4f complexes [Ln2(hfac)6(H2O)(NITPhPzbis)] (LnIII = Gd1, Tb2, Dy3; hfac = hexafluoroacetylacetonate) were successfully synthesized. In complexes 1–3, the designed biradical NITPhPzbis coordinates with two LnIII ions in chelating and bridging modes to form a four-spin binuclear structure. Direct-current magnetic study of Gd analogue indicates that ferromagnetic exchange exists between the Gd ion and the radical while antiferromagnetic coupling dominates between two mono-radicals. Dynamic magnetic data show that the χ” signals of complex 3 exhibit frequency dependence under zero field, demonstrating slow magnetic relaxation behavior in complex 3. And the estimated values of Ueff and τ0 are about 8.4 K and 9.1 × 10−8 s, respectively.

Syntheses and magnetic properties of a bis-tridentate nitronyl nitroxide radical and its metal complexes

2019 ◽  
Vol 48 (15) ◽  
pp. 4774-4778 ◽  
Author(s):  
Hao Miao ◽  
Miao Li ◽  
Hong-Qing Li ◽  
Fu-Xing Shen ◽  
Yi-Quan Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Metal Complexes ◽  
Magnetic Relaxation ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Slow Magnetic Relaxation

A new bis-tridentate nitronyl nitroxide radical was synthesized and characterized. Field-induced slow magnetic relaxation was observed in the radical-bridged CoII complex.

3D isomorphous lanthanide coordination polymers displaying magnetic refrigeration, slow magnetic relaxation and tunable proton conduction

2018 ◽  
Vol 47 (43) ◽  
pp. 15405-15415 ◽  
Author(s):  
Siba Prasad Bera ◽  
Arpan Mondal ◽  
Subhadip Roy ◽  
Bijoy Dey ◽  
Atanu Santra ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymers ◽  
Magnetic Relaxation ◽  
Magnetic Refrigeration ◽  
Proton Conduction ◽  
Lanthanide Coordination Polymers ◽  
Slow Magnetic Relaxation ◽  
Coordination Frameworks

Four lanthanide 3D coordination frameworks with 1D hydrophilic channels along the crystallographic c direction have been investigated for their proton conduction and magnetic properties.

scholarly journals Neodymium β-diketonate showing slow magnetic relaxation and acting as a ratiometric thermometer based on near-infrared emission

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23444-23449 ◽  
Author(s):  
Kunal Kumar ◽  
Daisuke Abe ◽  
Keiko Komori-Orisaku ◽  
Olaf Stefańczyk ◽  
Koji Nakabayashi ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Near Infrared ◽  
Infrared Emission ◽  
Thermally Induced ◽  
Slow Magnetic Relaxation ◽  
Near Infrared Emission

In this work, we investigated thermally-induced Nd-based one centred ratiometric thermometer which also exhibit single molecule magnetic properties.

A substituent effect of phenylacetic acid coligand perturbed structures and magnetic properties observed in two triple-bridged azido-Cu(ii) chain compounds with ferromagnetic ordering and slow magnetic relaxation

2017 ◽  
Vol 46 (23) ◽  
pp. 7556-7566 ◽  
Author(s):  
Xiangyu Liu ◽  
Xiaohui Ma ◽  
Peipei Cen ◽  
Yuewei Wu ◽  
Chengcheng Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Substituent Effect ◽  
Magnetic Relaxation ◽  
Phenylacetic Acid ◽  
Slow Magnetic Relaxation ◽  
Chain Compounds ◽  
Ferromagnetic Ordering

Two triple-bridged azido-Cu(ii) chains exhibit distinct magnetic behaviors.

Pentanuclear lanthanide pyramids based on thiacalix[4]arene ligand exhibiting slow magnetic relaxation

2015 ◽  
Vol 44 (35) ◽  
pp. 15481-15490 ◽  
Author(s):  
Jing-Yuan Ge ◽  
Jing Ru ◽  
Feng Gao ◽  
You Song ◽  
Xin-Hui Zhou ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Ions ◽  
Ligand Field ◽  
Molecular Symmetry ◽  
Slow Magnetic Relaxation ◽  
Arene Ligand ◽  
First Time

Six pentanuclear LnIII clusters have been isolated based on thiacalix[4]arene ligand for the first time. Two Dy5 clusters feature distinct slow magnetic relaxation, which is affected presumably by the ligand, field molecular symmetry and coordination geometries of lanthanide ions.

Sign in / Sign up

Export Citation Format

Share Document