Luminescent single molecule magnets of a series of β-diketone dysprosium complexes

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94802-94808 ◽  
Author(s):  
Wenyi Chu ◽  
Qingyan Sun ◽  
Xu Yao ◽  
Pengfei Yan ◽  
Guanghui An ◽  
...  
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Bifunctional Properties

A series of three β-diketone mononuclear Dy(iii) complexes exhibit bifunctional properties of single molecule magnet and luminescence.

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.

Recent advances in lanthanide coordination polymers and clusters with magnetocaloric effect or single-molecule magnet behavior

2021 ◽  
Author(s):  
Jun-Jie Hu ◽  
Yan Peng ◽  
Sui-Jun Liu ◽  
He-Rui Wen
Keyword(s):  
Quantum Computing ◽  
Low Temperature ◽  
Magnetocaloric Effect ◽  
Coordination Polymers ◽  
Single Molecule ◽  
Information Storage ◽  
Lanthanide Ions ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Lanthanide Coordination Polymers

The molecular magnetorefrigerant materials for low-temperature magnetic refrigeration and single-molecule magnets for high-density information storage and quantum computing have received extensive attention from chemists and magnetic experts. Lanthanide ions with...

Polyoxometalate-Supported Lanthanoid Single-Molecule Magnets

2014 ◽  
Vol 67 (11) ◽  
pp. 1542 ◽  
Author(s):  
Michele Vonci ◽  
Colette Boskovic
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Donor Ligands ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Coordination Numbers ◽  
Oxygen Donor ◽  
Slow Magnetic Relaxation

Polyoxometalates are robust and versatile multidentate oxygen-donor ligands, eminently suitable for coordination to trivalent lanthanoid ions. To date, 10 very different structural families of such complexes have been found to exhibit slow magnetic relaxation due to single-molecule magnet (SMM) behaviour associated with the lanthanoid ions. These families encompass complexes with between one and four of the later lanthanoid ions: Tb, Dy, Ho, Er, and Yb. The lanthanoid coordination numbers vary between six and eleven and a range of coordination geometries are evident. The highest energy barrier to magnetisation reversal measured to date for a lanthanoid–polyoxometalate SMM is Ueff/kB = 73 K for the heterodinuclear Dy–Eu compound (Bu4N)8H4[DyEu(OH)2(γ-SiW10O36)2].

scholarly journals Single-molecule magnet properties of a monometallic dysprosium pentalene complex

2018 ◽  
Vol 54 (51) ◽  
pp. 7085-7088 ◽  
Author(s):  
Alexander F. R. Kilpatrick ◽  
Fu-Sheng Guo ◽  
Benjamin M. Day ◽  
Akseli Mansikkamäki ◽  
Richard A. Layfield ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barriers ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Dysprosium Complex

The pentalene-ligated dysprosium complex [(η8-Pn†)Dy(Cp*)] (1Dy) (Pn† = [1,4-(iPr3Si)2C8H4]2−) and its magnetically dilute analogue are single-molecule magnets, with energy barriers of 245 cm−1.

scholarly journals Fulvalene as a platform for the synthesis of a dimetallic dysprosocenium single-molecule magnet

2020 ◽  
Vol 11 (22) ◽  
pp. 5745-5752 ◽  
Author(s):  
Mian He ◽  
Fu-Sheng Guo ◽  
Jinkui Tang ◽  
Akseli Mansikkamäki ◽  
Richard A. Layfield
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet

A series of fulvalene-supported dimetallic dysprosium metallocene SMMs provides a roadmap to poly-cationic dysprosocenium single-molecule magnets.

A family of novel Mn3Ln4 clusters displaying single-molecule magnet behavior

2014 ◽  
Vol 43 (44) ◽  
pp. 16737-16744 ◽  
Author(s):  
Hui Chen ◽  
Cheng-Bing Ma ◽  
Ming-Qiang Hu ◽  
Hui-Min Wen ◽  
Chang-Neng Chen
Keyword(s):  
Single Molecule ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet

A family of novel Mn3Ln4 clusters: single-molecule magnets and the first structurally characterized 3d/4f clusters containing the 3-methyloxysalicylaldoximate ligand.

scholarly journals The Single Molecule Magnets Mn12 and Fe8

2013 ◽  
pp. 106-118
Keyword(s):  
Single Molecule ◽  
Molecular Modelling ◽  
Material Science ◽  
Molecular Geometry ◽  
Cutting Edge ◽  
Science Students ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Ligand Interactions ◽  
Metal Ligand

In this exercise students will review a number of fundamental concepts including molecular geometry, electron configurations, magnetism, metal-ligand interactions, and material science. Students will use molecular modelling software to build, visualize and study a cutting edge material (single molecule magnet).

scholarly journals Bis-cyclooctatetraenyl Thulium(II): Highly Reducing Lanthanide Sandwich Single Molecule Magnets

2020 ◽  
Author(s):  
Jules Moutet ◽  
jules Schleinitz ◽  
Leo La Droitte ◽  
Maxime Tricoire ◽  
Frédéric Gendron ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Single Electron Transfer ◽  
Small Molecule Activation ◽  
Sandwich Complex ◽  
Magnetic Studies ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Divalent Lanthanide ◽  
Reliable Basis

Divalent lanthanide organometallics are well known highly reducing compounds usually used for single electron transfer reactivity and small molecule activation. Thus, their very reactive nature prevented for many years the study of their physical properties, such as magnetic studies on a reliable basis. In this article, the access to rare organometallic sandwich compounds of Tm<sup>II</sup> with the cyclooctatetraenyl (Cot) ligand impacts on the use of divalent organolanthanide compounds as an additional strategy for the design of performing Single Molecule Magnets (SMM). Herein, the first divalent thulium sandwich complex with f<sup>13</sup> configuration behaving as a Single Molecule Magnet in absence of DC field is highlighted.

D4h Local Symmetric dysprosium(III) Single-Molecule Magnet with Energy Barrier Exceeding 2000 K

2020 ◽  
Author(s):  
Xia-Li Ding ◽  
Yuan-Qi Zhai ◽  
Tian Han ◽  
Wei-Peng Chen ◽  
You-Song Ding ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Local Symmetry ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
The Third ◽  
Type Symmetry

<p><a></a><a></a><a><b>Three six-coordinate Dy(III) single-molecule magnets (SMMs) [Dy(O<sup>t</sup>Bu)<sub>2</sub>(L)<sub>4</sub>]<sup>+</sup> with <i>D</i><sub>4h</sub> local symmetry are obtained by optimising the equatorial ligands. Compound 1 where L = 4-phenylpyridine shows an energy barrier (<i>U</i><sub>eff</sub>) of 2075(11) K, which is the third largest <i>U</i><sub>eff</sub>, and the first <i>U</i><sub>eff</sub> > 2000 K for SMMs with axial-type symmetry so far.</b></a></p>

A remarkable energy barrier for spin reversal in a field induced dinuclear ytterbium single molecule magnet

2021 ◽  
Vol 50 (39) ◽  
pp. 13666-13670
Author(s):  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Slow Relaxation ◽  
Single Molecule Magnets ◽  
Single Molecule Magnet ◽  
Crystal Fields ◽  
Spin Reversal

Strong equatorial and weak axial crystal fields enhance the energy barrier for slow relaxation of magnetization in Yb-based single molecule magnets.

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