Macrocycle supported dimetallic lanthanide complexes with slow magnetic relaxation in Dy2 analogues

2020 ◽  
Vol 49 (40) ◽  
pp. 14169-14179
Author(s):  
Fu-Xing Shen ◽  
Kuheli Pramanik ◽  
Paula Brandão ◽  
Yi-Quan Zhang ◽  
Narayan Ch. Jana ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation ◽  
Macrocycle Ligand

A series of isomorphous dimetallic LnIII complexes with a macrocycle ligand and different β-diketone coligands have been synthesized and characterized structurally and magnetically.

Two novel tetranuclear lanthanide complexes (Ln = Tb(III) and Dy(III)) with luminescence and slow magnetic relaxation behaviors

Polyhedron ◽  
2019 ◽  
Vol 157 ◽  
pp. 292-296
Author(s):  
Ying Shi ◽  
Ya-Xin Zhang ◽  
Meng Li ◽  
Yue-Hua Zhang ◽  
Bi-Ying Liu ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation

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.

A series of tetranuclear lanthanide complexes comprising two edge-sharing triangular units with field-induced slow magnetic relaxation for Dy4 species

2011 ◽  
Vol 40 (33) ◽  
pp. 8347 ◽  
Author(s):  
Shufang Xue ◽  
Lang Zhao ◽  
Yun-Nan Guo ◽  
Ruiping Deng ◽  
Yang Guo ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation

Modulation of the properties of dinuclear lanthanide complexes through utilizing different β-diketonate co-ligands: near-infrared luminescence and magnetization dynamics

2020 ◽  
Vol 49 (9) ◽  
pp. 2850-2861 ◽  
Author(s):  
Yun-Juan Wang ◽  
Dong-Fang Wu ◽  
Jian Gou ◽  
Yao-Yao Duan ◽  
Ling Li ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Near Infrared ◽  
Magnetization Dynamics ◽  
Infrared Luminescence ◽  
Slow Magnetic Relaxation

Four Dy2 complexes based on the ligand H2L display various slow magnetic relaxation behaviors through utilizing different β-diketonate co-ligands.

Structures, luminescent and magnetic properties of three dinuclear lanthanide complexes: Dysprosium compound displaying slow magnetic relaxation

Polyhedron ◽  
2019 ◽  
Vol 157 ◽  
pp. 530-535
Author(s):  
Ming Fang ◽  
Ying-Ying Chen ◽  
Li-Jun Shao ◽  
Tian-Xing Shi ◽  
Hong Yu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation

A family of hexanuclear lanthanide complexes with slow magnetic relaxation for Dy6 cluster

Polyhedron ◽  
2017 ◽  
Vol 129 ◽  
pp. 77-81 ◽  
Author(s):  
Li-Juan Wu ◽  
Hua Yang ◽  
Su-Yuan Zeng ◽  
Da-Cheng Li ◽  
Jian-Min Dou
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation

Two hybrid lanthanide complexes exhibiting a large magnetocaloric effect and slow magnetic relaxation

2017 ◽  
Vol 46 (30) ◽  
pp. 10023-10028 ◽  
Author(s):  
Song-De Han ◽  
Jin-Hua Li ◽  
Hao-Hao Liu ◽  
Guo-Ming Wang
Keyword(s):  
Magnetocaloric Effect ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Slow Magnetic Relaxation ◽  
Two Hybrid ◽  
Hybrid Complexes

We report two isostructural lanthanide hybrid complexes. The Gd-compound exhibits a large magnetocaloric effect with −ΔSmaxm = 51.29 J kg−1 K−1, and the Dy-compound displays slow magnetic relaxation.

scholarly journals Series of Chloranilate-Bridged Dinuclear Lanthanide Complexes: Kramers Systems Showing Field-Induced Slow Magnetic Relaxation

2019 ◽  
Vol 5 (2) ◽  
pp. 30 ◽  
Author(s):  
Ryuta Ishikawa ◽  
Shoichi Michiwaki ◽  
Takeshi Noda ◽  
Keiichi Katoh ◽  
Masahiro Yamashita ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Relaxation Processes ◽  
X Ray Diffraction ◽  
Single Molecule Magnets ◽  
Magnetic Susceptibility Data ◽  
Susceptibility Data ◽  
Slow Magnetic Relaxation

A series of chloralilate-bridged dinuclear lanthanide complexes of formula [{LnIII(Tp)2}2(μ-Cl2An)]·2CH2Cl2, where Cl2An2− and Tp− represent the chloranilate and hydrotris (pyrazolyl)borate ligands, respectively, and Ln = Gd (1), Tb (2), Ho (3), Er (4), and Yb (5) was synthesized. All five complexes were characterized by an elemental analysis, infrared spectroscopy, single crystal X-ray diffraction, and SQUID measurements. The complexes 1–5 in the series were all isostructural. A comparison of the temperature dependence of the dc magnetic susceptibility data of these complexes revealed clear differences depending on the lanthanide center. Ac magnetic susceptibility measurements revealed that none of the five complexes exhibited a slow magnetic relaxation under a zero applied dc field. On the other hand, the Kramers systems (complexes 4 and 5) clearly displayed a slow magnetic relaxation under applied dc fields, suggesting field-induced single-molecule magnets that occur through Orbach and Raman relaxation processes.

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