Synthesis, crystal structures and magnetic properties of a series of pentanuclear heterometallic [CuII3LnIII2] (Ln = Ho, Dy, and Gd) complexes containing mixed organic ligands

2019 ◽  
Vol 43 (21) ◽  
pp. 8101-8108 ◽  
Author(s):  
Yong Chen ◽  
Qiao-Qiao Long ◽  
Zhao-Bo Hu ◽  
Hui-Sheng Wang ◽  
Zhi-Yong Huang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Magnetic Relaxation ◽  
Organic Ligands ◽  
Relaxation Behaviour ◽  
Slow Magnetic Relaxation

Three novel heterometallic compounds [CuII3LnIII2] [Ln = Ho (1), Dy (2) and Gd (3)] containing mixed organic ligands were obtained. 1 and 2 show slow magnetic relaxation behaviour.

Charge transfer and slow magnetic relaxation in a series of cyano-bridged FeIII4MII2 (M = FeII, CoII, NiII) molecules

2019 ◽  
Vol 6 (2) ◽  
pp. 493-497 ◽  
Author(s):  
Jin-Hua Wang ◽  
Kuduva R. Vignesh ◽  
Jia Zhao ◽  
Zhao-Yang Li ◽  
Kim R. Dunbar
Keyword(s):  
Magnetic Properties ◽  
Charge Transfer ◽  
Single Crystal ◽  
Crystal Structures ◽  
Magnetic Relaxation ◽  
Single Crystal Structures ◽  
Slow Magnetic Relaxation

The synthesis, single-crystal structures and magnetic properties of three new cyano-bridged complexes [FeIII4MII2] (M = FeII, CoII, NiII) are reported.

Modulating the structural topologies and magnetic relaxation behaviour of the Mn–Dy compounds by using different auxiliary organic ligands

2020 ◽  
Vol 44 (38) ◽  
pp. 16302-16310
Author(s):  
Hui-Sheng Wang ◽  
Yong Chen ◽  
Zhao-Bo Hu ◽  
Ke Zhang ◽  
Zaichao Zhang ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
Relaxation Behavior ◽  
Organic Ligands ◽  
Dimensional Chain ◽  
Relaxation Behaviour ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

A MnIII4DyIII complex and a one-dimensional chain containing MnIII2DyIII units have been obtained by using different combinations of organic ligands, and a slow magnetic relaxation behavior was observed for both complexes.

Syntheses, crystal structures and magnetic properties of two mixed-valence Co(iii)Co(ii) compounds derived from Schiff base ligands: field-supported single-ion-magnet behavior with easy-plane anisotropy

2017 ◽  
Vol 46 (38) ◽  
pp. 13135-13144 ◽  
Author(s):  
Shuvankar Mandal ◽  
Suraj Mondal ◽  
Cyril Rajnák ◽  
Ján Titiš ◽  
Roman Boča ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Crystal Structures ◽  
Magnetic Relaxation ◽  
Mixed Valence ◽  
Easy Plane ◽  
Schiff Base Ligands ◽  
Plane Anisotropy ◽  
Amino Phenol ◽  
Slow Magnetic Relaxation

Positive D values and slow magnetic relaxation with two relaxation channels have been observed in two CoIIICoII compounds derived from imino-amino-phenol ligands.

3d–4f heterometallic trinuclear complexes derived from amine-phenol tripodal ligands exhibiting magnetic and luminescent properties

2017 ◽  
Vol 46 (4) ◽  
pp. 1153-1162 ◽  
Author(s):  
He-Rui Wen ◽  
Piao-Ping Dong ◽  
Sui-Jun Liu ◽  
Jin-Sheng Liao ◽  
Fu-Yong Liang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Magnetic Relaxation ◽  
Luminescent Properties ◽  
Tripodal Ligands ◽  
Trinuclear Complexes ◽  
Slow Magnetic Relaxation

The syntheses, crystal structures, and magnetic properties of a family of new 3d–4f heterometallic trinuclear complexes were investigated. Slow magnetic relaxation was observed for the Zn–Dy–Zn complex besides stronger fluorescent emissions.

Slow magnetic relaxation in dinuclear dysprosium and holmium phenoxide bridged complexes: a Dy2 single molecule magnet with a high energy barrier

2021 ◽  
Author(s):  
Matilde Fondo ◽  
Julio Corredoira-Vázquez ◽  
Ana M. Garcia-Deibe ◽  
Jesus Sanmartin Matalobos ◽  
Silvia Gómez-Coca ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
High Energy ◽  
Single Molecule Magnet ◽  
High Energy Barrier ◽  
Slow Magnetic Relaxation

Dinuclear [M(H3L1,2,4)]2 (M = Dy, Dy2; M = Ho, Ho2) complexes were isolated from an heptadentate aminophenol ligand. The crystal structures of Dy2·2THF, and the pyridine adducts Dy2·2Py and Ho2·2Py,...

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 structurally similar mononuclear 8-coordinate Fe(ii) and Fe(iii) compounds

2021 ◽  
Author(s):  
Qian-Qian Su ◽  
Qiong Yuan ◽  
Xiao-Fan Wu ◽  
Si-Huai Chen ◽  
Jing Xiang ◽  
...  
Keyword(s):  
High Spin ◽  
Magnetic Relaxation ◽  
Relaxation Behaviour ◽  
Slow Magnetic Relaxation

A pair of structurally-similar and stable 8-coordinate high-spin Fe(ii) and Fe(iii) compounds have been obtained. Both compounds exhibit field-induced slow magnetic relaxation behaviour.

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.

scholarly journals Synthesis, crystal structures and magnetic properties of two heterometallic {Ln8Cr4} (Ln = Gd3+ and Tb3+) complexes with one-dimensional wave chain structure

RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11365-11370
Author(s):  
Ye-Min Han ◽  
Ning-Fang Li ◽  
Yan-Zhao Yu ◽  
Jia-Peng Cao ◽  
Mu-Xiu Yang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystal Structures ◽  
Chain Structure ◽  
Organic Ligands ◽  
One Dimensional ◽  
Heterometallic Cluster ◽  
Dimensional Wave

Two heterometallic cluster {Ln8Cr4} were constructed from two classical “drum-like” {Ln4Cr2} building units associated by organic ligands HIN, displaying 1D wave chain structure. The MCE values for {Gd8Cr4} at 3 K and 7 T is 23.40 J kg−1 K−1.

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