Experimental determination of single molecule toroic behaviour in a Dy8 single molecule magnet

Multi-orientation single-crystal magnetisation measurements unpick the spin structure of Dy8, identifying a canted antiferrotoroidic tetramer ground-state with slow magnetic relaxation.

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

Inorganic Chemistry Frontiers ◽

10.1039/d1qi00152c ◽

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,...

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Towards solvent tuning of slow magnetic relaxation and ferroelectric properties in a dysprosium metal–organic framework system

Zeitschrift für Kristallographie - Crystalline Materials ◽

10.1515/zkri-2018-2050 ◽

2019 ◽

Vol 234 (1) ◽

pp. 33-41

Author(s):

Lina Zhang ◽

Shuyan Guan ◽

Yunchang Fan ◽

Chenxia Du ◽

Dan Zhao ◽

...

Keyword(s):

Single Crystal ◽

Single Molecule ◽

Magnetic Relaxation ◽

Metal Organic Framework ◽

Ferroelectric Properties ◽

Relaxation Rates ◽

Slow Magnetic Relaxation ◽

Metal Organic ◽

Solvent Molecules ◽

Organic Framework

Abstract A new dysprosium metal–organic framework {[Dy2(L)3(H2O)4]·(acetone)2·(H2O)3}n (Dy2-Acetone) with single-molecule magnet and ferroelectric properties was synthesized through a solvent-induced single-crystal-to-single-crystal (SCSC) transformation. Notably, exchange of the coordinated and guest solvent molecules lead to different magnetic relaxation and ferroelectric properties in the dysprosium MOF system, Dy2-DMF and Dy2-Acetone. Study reveals that the tunable magnetic relaxation behaviors are most likely a result of different local coordination sphere and lattice solvent molecules within the pores which influenced and tuned the relaxation rates of the magnetization. Moreover, disparate polar solvent molecules confined in the MOFs may be the key factors for their different ferroelectric properties.

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Polyoxometalate-Supported Lanthanoid Single-Molecule Magnets

Australian Journal of Chemistry ◽

10.1071/ch14166 ◽

2014 ◽

Vol 67 (11) ◽

pp. 1542 ◽

Cited By ~ 24

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].

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Structures, fluorescence properties and magnetic properties of a series of rhombus-shaped LnIII4 clusters: magnetocaloric effect and single-molecule-magnet behavior

New Journal of Chemistry ◽

10.1039/c9nj02872b ◽

2019 ◽

Vol 43 (33) ◽

pp. 12941-12949 ◽

Cited By ~ 19

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.

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A mononuclear five-coordinate Co(ii) single molecule magnet with a spin crossover between the S = 1/2 and 3/2 states

Dalton Transactions ◽

10.1039/c8dt03783c ◽

2018 ◽

Vol 47 (46) ◽

pp. 16596-16602 ◽

Cited By ~ 16

Author(s):

Lei Chen ◽

Jingbo Song ◽

Wen Zhao ◽

Gangji Yi ◽

Zhikuan Zhou ◽

...

Keyword(s):

Hysteresis Loop ◽

Single Molecule ◽

Magnetic Relaxation ◽

Spin Crossover ◽

Spin Transition ◽

Single Molecule Magnet ◽

Pyramidal Geometry ◽

Mononuclear Cobalt ◽

Slow Magnetic Relaxation ◽

Square Pyramidal Geometry

A mononuclear cobalt(ii) complex with square pyramidal geometry displays a spin transition with a small hysteresis loop and slow magnetic relaxation.

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Zero-field slow magnetic relaxation in a uranium(iii) complex with a radical ligand

Chemical Communications ◽

10.1039/c4cc04486j ◽

2014 ◽

Vol 50 (71) ◽

pp. 10262-10264 ◽

Cited By ~ 21

Author(s):

Joana T. Coutinho ◽

Maria A. Antunes ◽

Laura C. J. Pereira ◽

Joaquim Marçalo ◽

Manuel Almeida

Keyword(s):

Single Molecule ◽

Magnetic Relaxation ◽

Zero Field ◽

Single Molecule Magnet ◽

Slow Magnetic Relaxation ◽

Bipyridine Ligand ◽

Radical Ligand

Single-molecule-magnet behaviour in [U(TpMe2)2(bipy˙)], a U(iii) complex with a radical bipyridine ligand, having magnetic contributions from both the metal and the ligand.

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