Single Molecule Magnet Behavior of a Pentanuclear Mn-Based Metallacrown Complex: Solid State and Solution Magnetic Studies

2011 ◽  
Vol 50 (22) ◽  
pp. 11348-11352 ◽  
Author(s):  
Curtis M. Zaleski ◽  
Simon Tricard ◽  
Ezra C. Depperman ◽  
Wolfgang Wernsdorfer ◽  
Talal Mallah ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Magnetic Studies ◽  
Single Molecule Magnet

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.

scholarly journals Solid‐State Near‐Infrared Circularly Polarized Luminescence from Chiral YbIII‐Single‐Molecule Magnet

2021 ◽  
Author(s):  
Fabrice Pointillart ◽  
Bertrand Lefeuvre ◽  
Carlo Andrea Mattei ◽  
Jessica Flores Gonzalez ◽  
Frédéric Gendron ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Near Infrared ◽  
Circularly Polarized ◽  
Single Molecule Magnet ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

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 Solid-state versus solution investigation of a luminescent chiral BINOL-derived bisphosphate single-molecule magnet

2021 ◽  
Author(s):  
Carlo Andrea Mattei ◽  
Vincent Montigaud ◽  
Frédéric Gendron ◽  
Sandrine Denis-Quanquin ◽  
Vincent Dorcet ◽  
...  
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Single Molecule ◽  
Single Molecule Magnet ◽  
Versus Solution

The enantiopure coordination polymer [Dy(hfac)3((S/R)-L)]n ([(S/R)-1]n) involving a BINOL-derived bisphosphate ligand (S/R)-L is investigated both in solution and solid-state.

Environmental Influence on the Single-Molecule Magnet Behavior of [MnIII6CrIII]3+: Molecular Symmetry versus Solid-State Effects

2012 ◽  
Vol 51 (20) ◽  
pp. 10929-10954 ◽  
Author(s):  
Veronika Hoeke ◽  
Maik Heidemeier ◽  
Erich Krickemeyer ◽  
Anja Stammler ◽  
Hartmut Bögge ◽  
...  
Keyword(s):  
Solid State ◽  
Single Molecule ◽  
Environmental Influence ◽  
Molecular Symmetry ◽  
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.

Modulating single-molecule magnet behavior towards multiple magnetic relaxation processes through structural variation in Dy4 clusters

2018 ◽  
Vol 5 (8) ◽  
pp. 1876-1885 ◽  
Author(s):  
Wen-Min Wang ◽  
Xiao-Min Kang ◽  
Hai-Yun Shen ◽  
Zhi-Lei Wu ◽  
Hong-Ling Gao ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Magnetic Relaxation ◽  
Structural Variation ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Magnetic Studies ◽  
Single Molecule Magnet

Three Dy4 clusters based on a flexible and attractive Schiff base ligand HL have been synthesized, and they showed different tetranuclear core arrangements. Magnetic studies reveal that clusters 1–3 display distinct slow relaxation of magnetization.

A series of [2 × 2] square grid LnIII4 clusters: a large magnetocaloric effect and single-molecule-magnet behavior

2019 ◽  
Vol 43 (19) ◽  
pp. 7419-7426 ◽  
Author(s):  
Wen-Min Wang ◽  
Xian-Zhen Li ◽  
Li Zhang ◽  
Jia-Li Chen ◽  
Jun-Hua Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Magnetocaloric Effect ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Relaxation Behavior ◽  
Slow Relaxation ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Square Grid

Four new [2 × 2] square grid LnIII4 clusters were successfully synthesized by employing a multidentate chelating Schiff base ligand. Magnetic studies showed that cluster 1 displays a larger magnetocaloric effect (−ΔSm = 34.46 J kg−1 K−1 for ΔH = 7.0 T at 2.0 K), while 3 exhibits slow relaxation behavior under a zero dc field, with ΔE/kB of 42.76 K and τ0 of 1.02 × 10−6 s.

Magnetic and Optical Properties of Novel Lanthanide(III) Complexes Based on Schiff Base and β-Diketonate Ligands

2018 ◽  
Vol 71 (7) ◽  
pp. 527
Author(s):  
Yufeng Jia ◽  
Hongfeng Li ◽  
Peng Chen ◽  
Ting Gao ◽  
Wenbin Sun ◽  
...  
Keyword(s):  
Optical Properties ◽  
Schiff Base ◽  
Solid State ◽  
Single Molecule ◽  
Energy Barrier ◽  
Quantum Yields ◽  
Single Molecule Magnet ◽  
One Dimensional ◽  
Self Assembling ◽  
Magnetic Analysis

A series of lanthanide-based self-assembling complexes constructed from Schiff base and β-diketonate ligands have been synthesised by the same method. They are one dimensional complexes ({[Ln(H2L)(tta)2(OAc)]·0.5H2O}n (Ln = Eu (1), Gd (2), Dy (3), Yb (4)); H2L = N,N′-bis(salicylidene)butane-1,4-diamine, tta = 2-thenoyltrifluoroacetone). Complexes 1 and 4 exhibit characteristic metal-centred emission in the solid state. The lifetimes and quantum yields of luminescence were also determined. Magnetic analysis reveals that complex 3 exhibits field-induced single-molecule magnet (SMM) behaviour with an energy barrier of 24.07 K.

Modulating single-molecule magnet behaviour of phenoxo-O bridged lanthanide(iii) dinuclear complexes by using different β-diketonate coligands

2016 ◽  
Vol 3 (1) ◽  
pp. 133-141 ◽  
Author(s):  
Wen-Min Wang ◽  
Shi-Yu Wang ◽  
Hong-Xia Zhang ◽  
Hai-Yun Shen ◽  
Ji-Yong Zou ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Dinuclear Complexes ◽  
Magnetic Studies ◽  
Single Molecule Magnet ◽  
Similar Crystal Structure

Three Dy2 complexes with similar crystal structure have been synthesized. Magnetic studies reveal that they exhibit different magnetic relaxation behaviors, originating from the different chemical environments of the center Dy3+ ions with different β-diketonate coligands.

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