A Linear Metal-Metal Bonded Tri-Iron Single-Molecule Magnet

2021 ◽  
Author(s):  
Anandi Srinivasan ◽  
Rebecca A Musgrave ◽  
Mathieu Rouzieres ◽  
Rodolphe Clerac ◽  
John E. McGrady ◽  
...  
Keyword(s):  
Single Molecule ◽  
Complex Cation ◽  
Trinuclear Complex ◽  
Ferromagnetic Coupling ◽  
Single Molecule Magnet ◽  
Metal Metal

The linear trinuclear complex cation [Fe3(DpyF)4]2+ was prepared as [Fe3(DpyF)4](BF4)2·2CH3CN. With large Fe–Fe distances of 2.78 Å, this complex demonstrates intramolecular ferromagnetic coupling between the anisotropic FeII centers (J/kB =...

Spectroscopic Investigation of a Metal–Metal-Bonded Fe6 Single-Molecule Magnet with an Isolated S = 19/2 Giant-Spin Ground State

2021 ◽  
Vol 60 (7) ◽  
pp. 4610-4622
Author(s):  
Joscha Nehrkorn ◽  
Samuel M. Greer ◽  
Brian J. Malbrecht ◽  
Kevin J. Anderton ◽  
Azar Aliabadi ◽  
...  
Keyword(s):  
Single Molecule ◽  
Ground State ◽  
Spectroscopic Investigation ◽  
Single Molecule Magnet ◽  
Metal Metal ◽  
Spin Ground State

A series of goblet-like heterometallic pentanuclear [LnIIICuII4] clusters featuring ferromagnetic coupling and single-molecule magnet behavior

2012 ◽  
Vol 48 (87) ◽  
pp. 10736 ◽  
Author(s):  
Qilong Zhu ◽  
Shengchang Xiang ◽  
Tianlu Sheng ◽  
Daqiang Yuan ◽  
Chaojun Shen ◽  
...  
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Single Molecule Magnet

From a Dy(III) Single Molecule Magnet (SMM) to a Ferromagnetic [Mn(II)Dy(III)Mn(II)] Trinuclear Complex

2012 ◽  
Vol 51 (18) ◽  
pp. 9589-9597 ◽  
Author(s):  
Asamanjoy Bhunia ◽  
Michael T. Gamer ◽  
Liviu Ungur ◽  
Liviu F. Chibotaru ◽  
Annie K. Powell ◽  
...  
Keyword(s):  
Single Molecule ◽  
Trinuclear Complex ◽  
Single Molecule Magnet

A triangular dysprosium with asymmetric central caps featuring ferromagnetic coupling and single-molecule magnet behaviour

2013 ◽  
Vol 42 (29) ◽  
pp. 10413 ◽  
Author(s):  
Si Shen ◽  
Shufang Xue ◽  
Shuang-Yan Lin ◽  
Lang Zhao ◽  
Jinkui Tang
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Single Molecule Magnet

Ferromagnetic coupling in a chloride-bridged erbium single-molecule magnet

2017 ◽  
Vol 53 (53) ◽  
pp. 7322-7324 ◽  
Author(s):  
J. D. Hilgar ◽  
B. S. Flores ◽  
J. D. Rinehart
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Single Molecule Magnet ◽  
High Anisotropy

We present the first ferromagnetically-coupled Er3+ complex with linked, high-anisotropy Er–COT (COT2− = cyclooctatetraene dianion) subunits.

Linear trinuclear cobalt(ii) single molecule magnet

2015 ◽  
Vol 44 (6) ◽  
pp. 2865-2870 ◽  
Author(s):  
Yuan-Zhu Zhang ◽  
Andrew J. Brown ◽  
Yin-Shan Meng ◽  
Hao-Ling Sun ◽  
Song Gao
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Coordination Environment ◽  
Single Molecule Magnet ◽  
Drastic Effect

The first linear trinuclear [CoII3] SMM was achieved due to significant intracluster ferromagnetic coupling. This study shows that miniscule changes in the coordination environment of the cobalt centers in this structural archetype can have a drastic effect on the observation of SMM behavior.

Two azido-bridged [2×2] cobalt(ii) grids featuring single-molecule magnet behaviour

2020 ◽  
Vol 49 (27) ◽  
pp. 9218-9222
Author(s):  
Zhilin Guo ◽  
Yi-Fei Deng ◽  
Yipei Zhang ◽  
Zoe Pikramenou ◽  
Yuan-Zhu Zhang
Keyword(s):  
Single Molecule ◽  
Ferromagnetic Coupling ◽  
Effective Energy ◽  
Energy Barriers ◽  
Single Molecule Magnet

Two Co(ii) [2 × 2] grid-like clusters containing both pyridazine and azido bridges were reported to exhibit overall intramolecular ferromagnetic coupling and field-induced single-molecule magnet behavior with the effective energy barriers up to 56 K.

scholarly journals Switching off the single-molecule magnet properties of the [CoII(Me6tren)(OH2)]2+ module by complexation with trans-[RuIII(salen)(CN)2]−

2014 ◽  
Vol 38 (8) ◽  
pp. 3443-3448 ◽  
Author(s):  
Dalice M. Piñero Cruz ◽  
Daniel N. Woodruff ◽  
Ie-Rang Jeon ◽  
Indrani Bhowmick ◽  
Mihail Secu ◽  
...  
Keyword(s):  
Single Molecule ◽  
Trinuclear Complex ◽  
Single Molecule Magnet

A new mononuclear pentacoordinate CoII SMM was synthesized and associated with trans-[RuIII(salen)(CN)2]− to form a trinuclear complex without SMM properties.

Exchange-Biasing in a Dinuclear Dysprosium(III) Single-Molecule Magnet with a Large Energy Barrier for Magnetization Reversal

2019 ◽  
Author(s):  
Tian Han ◽  
Marcus J. Giansiracusa ◽  
Zi-Han Li ◽  
You-Song Ding ◽  
Nicholas F. Chilton ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetization Reversal ◽  
Energy Barrier ◽  
Magnetic Hysteresis ◽  
Large Energy ◽  
Magnetic Studies ◽  
Bridging Ligands ◽  
Single Molecule Magnet ◽  
Exchange Biasing

A dichlorido-bridged dinuclear dysprosium(III) single-molecule magnet [Dy<sub>2</sub>L<sub>2</sub>(<i>µ</i>-Cl)<sub>2</sub>(THF)<sub>2</sub>] has been made using a diamine-bis(phenolate) ligand, H<sub>2</sub>L. Magnetic studies show an energy barrier for magnetization reversal (<i>U</i><sub>eff</sub>) around 1000 K. Exchange-biasing effect is clearly seen in magnetic hysteresis with steps up to 4 K. <i>Ab</i> initio calculations exclude the possibility of pure dipolar origin of this effect leading to the conclusion that super-exchange <i>via</i> the chloride bridging ligands is important.

Correlating Blocking Temperatures in Single Molecule Magnets with Raman Relaxation

2018 ◽  
Author(s):  
Marcus J. Giansiracusa ◽  
Andreas Kostopoulos ◽  
George F. S. Whitehead ◽  
David Collison ◽  
Floriana Tuna ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Single Molecule ◽  
Energy Barrier ◽  
Thermal Relaxation ◽  
Relaxation Mechanism ◽  
Blocking Temperature ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Key Parameter

We report a six coordinate DyIII single-molecule magnet<br>(SMM) with an energy barrier of 1110 K for thermal relaxation of<br>magnetization. The sample shows no retention of magnetization<br>even at 2 K and this led us to find a good correlation between the<br>blocking temperature and the Raman relaxation regime for SMMs.<br>The key parameter is the relaxation time (𝜏<sub>switch</sub>) at the point where<br>the Raman relaxation mechanism becomes more important than<br>Orbach.

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