Slow Magnetic Relaxation in Lanthanide Complexes with Chelating Nitronyl Nitroxide Radical

2010 ◽  
Vol 49 (11) ◽  
pp. 4735-4737 ◽  
Author(s):  
Xiao-Ling Wang ◽  
Li-Cun Li ◽  
Dai-Zheng Liao
Keyword(s):  
Magnetic Relaxation ◽  
Lanthanide Complexes ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
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.

A loop chain and a three-dimensional network assembled from a multi-dentate nitronyl nitroxide radical and M(hfac)2 (M = CoII, CuII)

2018 ◽  
Vol 47 (41) ◽  
pp. 14630-14635 ◽  
Author(s):  
Juan Sun ◽  
Lu Xi ◽  
Jing Xie ◽  
Kang Wang ◽  
Licun Li ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Three Dimensional ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Dimensional Network ◽  
Slow Magnetic Relaxation ◽  
Loop Chain ◽  
3D Framework

A unique loop chain and a 3D framework involving multidentate nitronyl nitroxide are reported and a Co complex exhibits slow magnetic relaxation.

Slow magnetic relaxation of Ln(III)-nitronyl nitroxide radical complexes with shortest non-covalent O⋯O contacts

2019 ◽  
Vol 1197 ◽  
pp. 666-671 ◽  
Author(s):  
Xiao-Ying Yin ◽  
Dan-Hua Shi ◽  
Huan Wang ◽  
Shu-Ping Wang ◽  
Jian-Jun Zhang ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Slow Magnetic Relaxation

Synthesis of a series of hetero-multi-spin Ln2Cu3 complexes based on a methyl-pyrazole nitronyl nitroxide radical with slow magnetic relaxation behaviors

2019 ◽  
Vol 48 (25) ◽  
pp. 9187-9193 ◽  
Author(s):  
Jian Yun Shi ◽  
Peng Yun Chen ◽  
Ming Ze Wu ◽  
Li Tian ◽  
Zhong Yi Liu
Keyword(s):  
Relaxation Process ◽  
Magnetic Relaxation ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical ◽  
Slow Magnetic Relaxation

Three multinuclear hetero-tri-spin complexes (Ln2Cu3) have been synthesized based on a methyl-pyrazole nitronyl nitroxide radical. Tb complex shows a single relaxation process.

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.

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, structures and magnetic properties of the lanthanide complexes of the pyrimidyl-substituted nitronyl nitroxide radical

2017 ◽  
Vol 46 (31) ◽  
pp. 10452-10461 ◽  
Author(s):  
Jian Wang ◽  
Hao Miao ◽  
Zhao-Xin Xiao ◽  
Yan Zhou ◽  
Lin-Dan Deng ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Lanthanide Complexes ◽  
Nitroxide Radical ◽  
Nitronyl Nitroxide ◽  
Nitronyl Nitroxide Radical

A series of lanthanide complexes of the pyrimidyl-substituted nitronyl nitroxide radical have been synthesized and characterized structurally and magnetically.

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