A family of rare earth complexes with chelating furan biradicals: syntheses, structures and magnetic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74864-74873 ◽  
Author(s):  
Xin Li ◽  
Ting Li ◽  
Li Tian ◽  
Zhong Yi Liu ◽  
Xiu Guang Wang
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Magnetic Relaxation ◽  
Rare Earth Complexes ◽  
Frequency Dependent ◽  
Magnetic Susceptibilities ◽  
Slow Magnetic Relaxation

Six LnIII–furan-biradical tri-spin complexes have been synthesized, they exhibit interesting magnetic properties. DyIIIcomplex shows frequency-dependent ac magnetic susceptibilities, which suggests the presence of slow magnetic relaxation.

scholarly journals A family of multi-spin rare-earth complexes based on a triazole nitronyl nitroxide radical: synthesis, structure and magnetic properties

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15480-15486 ◽  
Author(s):  
Peng Yun Chen ◽  
Ming Ze Wu ◽  
Xiu Juan Shi ◽  
Li Tian
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Magnetic Relaxation ◽  
Nitroxide Radical ◽  
Rare Earth Complexes ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Frequency Dependent ◽  
Magnetic Susceptibilities ◽  
Slow Magnetic Relaxation

Three LnIII–triazole–radical complexes have been synthesized, which exhibit interesting magnetic properties. The TbIII complex shows frequency-dependent ac magnetic susceptibilities, which suggests the presence of slow magnetic relaxation.

Tetranuclear rare-earth complexes: energy barrier enhancement and two-step slow magnetic relaxation activated by ligand substitution

2019 ◽  
Vol 6 (3) ◽  
pp. 756-764 ◽  
Author(s):  
Jian Gou ◽  
Shuang Liu ◽  
Yun-Juan Wang ◽  
Ling Li ◽  
Peng Ren ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Ligand Substitution ◽  
Rare Earth Complexes ◽  
Slow Magnetic Relaxation

The influence of tuning the β-diketone on the modulation of the magnetic properties is demonstrated.

Dodenuclear [MnIII8LnIII4] clusters with 2-(hydroxymethyl)pyridine: syntheses, structures, and magnetic properties

2015 ◽  
Vol 44 (48) ◽  
pp. 20964-20971 ◽  
Author(s):  
Lei Sun ◽  
Hui Chen ◽  
Chengbing Ma ◽  
Changneng Chen
Keyword(s):  
Magnetic Properties ◽  
Magnetic Relaxation ◽  
Frequency Dependent ◽  
Peak Maximum ◽  
Slow Magnetic Relaxation

Dodenuclear Mn/Ln clusters with 2-(hydroxymethyl)pyridine as a ligand have been synthesized. Complexes 1 and 5 showed a frequency-dependent decrease in χ′MT and an out-of-phase χ′′M peak maximum, indicating slow magnetic relaxation and potential SMM behaviour.

(thf)2Ln(Ge9{Si(SiMe3)3}3)2 (Ln = Eu, Sm): the first coordination of metalloid germanium clusters to lanthanides

2021 ◽  
Author(s):  
Andreas Schnepf ◽  
Svetlana Klementyeva ◽  
Claudio Schrenk ◽  
Marat M Khusniyarov ◽  
Minghui Zhang
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Crystallographic Analysis ◽  
Rare Earth Complexes ◽  
Group 14 ◽  
X Ray ◽  
Germanium Clusters

We report the synthesis, structure and magnetic properties of the first rare earth complexes of metalloid group 14 clusters [(thf)2Ln(Ge9Hyp3)2] (Ln = Eu, Sm, Hyp = Si(SiMe3)3). X-ray crystallographic analysis...

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.

Slow magnetic relaxation in CoII–LnIII heterodinuclear complexes achieved through a functionalized nitronyl nitroxide biradical

2020 ◽  
Vol 49 (4) ◽  
pp. 1089-1096 ◽  
Author(s):  
Lu Xi ◽  
Juan Sun ◽  
Kang Wang ◽  
Jiao Lu ◽  
Pei Jing ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Nitronyl Nitroxide ◽  
Frequency Dependent ◽  
Slow Magnetic Relaxation

Five nitronyl nitroxide biradical-CoII–LnIII heterodinuclear complexes were achieved and the DyCo derivative displayed visible temperature/frequency-dependent χ′′ peaks, indicating the SMM behavior.

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.

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