Slow magnetic relaxation and antiferromagnetic ordering in a one dimensional nitronyl nitroxide–Tb(iii) chain

2012 ◽  
Vol 36 (10) ◽  
pp. 2088 ◽  
Author(s):  
Ruina Liu ◽  
Congming Zhang ◽  
Xuelan Mei ◽  
Peng Hu ◽  
Haixia Tian ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Nitronyl Nitroxide ◽  
One Dimensional ◽  
Antiferromagnetic Ordering ◽  
Slow Magnetic Relaxation

Slow magnetic relaxation and field-induced metamagnetism in nitronyl nitroxide-Dy(iii) magnetic chains

2015 ◽  
Vol 44 (10) ◽  
pp. 4560-4567 ◽  
Author(s):  
Xiufeng Wang ◽  
Yungai Li ◽  
Peng Hu ◽  
Juanjuan Wang ◽  
Licun Li
Keyword(s):  
Magnetic Relaxation ◽  
Nitronyl Nitroxide ◽  
One Dimensional ◽  
Slow Magnetic Relaxation ◽  
Magnetic Chains

Four new one-dimensional Ln-nitronyl nitroxide complexes have been obtained. The Dy chain exhibits slow magnetic relaxation and three-step metamagnetism.

Functionalized nitronyl nitroxide biradical bridged one-dimensional lanthanide chains: slow magnetic relaxation in the Tb and Dy analogues

2017 ◽  
Vol 41 (18) ◽  
pp. 10181-10188 ◽  
Author(s):  
Hongdao Li ◽  
Juan Sun ◽  
Meng Yang ◽  
Zan Sun ◽  
Jing Xie ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Relaxation Behavior ◽  
Nitronyl Nitroxide ◽  
One Dimensional ◽  
Slow Magnetic Relaxation ◽  
1D Chains

The first examples of Ln-nitronyl nitroxide 1D chains based on the functionalized nitronyl nitroxide biradical have been obtained, and complexes Dy and Tb exhibit slow magnetic relaxation behavior.

Two one-dimensional lanthanide compounds with pentagonal bipyramidal ErIII centers showing slow magnetic relaxation

Polyhedron ◽  
2018 ◽  
Vol 139 ◽  
pp. 289-295 ◽  
Author(s):  
Xing-Cai Huang ◽  
Shi-Chang Yan ◽  
Cheng-Long Ji ◽  
Zi-Yi Qi ◽  
Yi-Ming Guo ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

Slow relaxation of magnetization in unprecedented Cu–Ln-Rad hetero-tri-spin chains constructed from multidentate nitronyl nitroxide

2019 ◽  
Vol 7 (29) ◽  
pp. 9057-9064 ◽  
Author(s):  
Juan Sun ◽  
Zan Sun ◽  
Kang Wang ◽  
Lu Xi ◽  
Yue Ma ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Spin Chains ◽  
Slow Relaxation ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxides ◽  
Slow Magnetic Relaxation

Unprecedented Cu–Ln heterometallic chains derived from poly-dentate nitronyl nitroxides are reported. A Tb complex shows slow magnetic relaxation, while a Dy derivative displays interesting two-step relaxations of magnetization.

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.

scholarly journals Slow Magnetic Relaxation in a One-Dimensional Coordination Polymer Constructed from Hepta-Coordinate Cobalt(II) Nodes

2020 ◽  
Vol 6 (4) ◽  
pp. 45
Author(s):  
Amit Kumar Mondal ◽  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Magnetic Susceptibility ◽  
Coordination Polymer ◽  
Magnetic Anisotropy ◽  
Ab Initio Calculations ◽  
Direct Current ◽  
Magnetic Relaxation ◽  
Relaxation Processes ◽  
Ac Magnetic Susceptibility ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

A one-dimensional coordination polymer was synthesized employing hepta-coordinate CoII as nodes and dicyanamide as linkers. Detailed direct current (DC) and alternating current (AC) magnetic susceptibility measurements reveal the presence of field-induced slow magnetic relaxation behavior of the magnetically isolated seven-coordinate CoII center with an easy-plane magnetic anisotropy. Detailed ab initio calculations were performed to understand the magnetic relaxation processes. To our knowledge, the reported complex represents the first example of slow magnetic relaxation in a one-dimensional coordination polymer constructed from hepta-coordinate CoII nodes and dicyanamide linkers.

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.

ChemInform Abstract: A Rare One-Dimensional Dy(III) Complex Exhibiting Slow Magnetic Relaxation

ChemInform ◽  
2013 ◽  
Vol 44 (49) ◽  
pp. no-no
Author(s):  
Bo Na ◽  
Yu-Xia Wang ◽  
Tian Han ◽  
Wei Shi ◽  
Peng Cheng
Keyword(s):  
Magnetic Relaxation ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

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.

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