A Dy2 dimer derived from a two-dimensional network with a high Ueff value

2019 ◽  
Vol 48 (8) ◽  
pp. 2560-2563 ◽  
Author(s):  
Ju-Wen Zhang ◽  
Yi Man ◽  
Wen-Hua Liu ◽  
Bin-Qiu Liu ◽  
Yan-Ping Dong
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Method ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Two Dimensional ◽  
Effective Energy ◽  
Ferromagnetic Interaction ◽  
Dimensional Network ◽  
Slow Magnetic Relaxation

A new two-dimensional dysprosium–organic coordination polymer 1-Dy has been synthesized by a hydrothermal method. 1-Dy displays a ferromagnetic interaction between two DyIII ions within the Dy2 dimer and a slow magnetic relaxation with a high effective energy barrier of approximately 160 K under a zero dc field.

Slow magnetic relaxation in a two-dimensional dysprosium(III) coordination polymer

2016 ◽  
Vol 70 ◽  
pp. 18-21 ◽  
Author(s):  
Shixiong She ◽  
Li Gong ◽  
Bo Wang ◽  
Yan Yang ◽  
Quan Lei ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Magnetic Relaxation ◽  
Two Dimensional ◽  
Slow Magnetic Relaxation

One-dimensional cobalt(ii) coordination polymer featuring single-ion-magnet-type field-induced slow magnetic relaxation

2018 ◽  
Vol 42 (12) ◽  
pp. 9612-9619 ◽  
Author(s):  
Xiangyu Liu ◽  
Xiufang Ma ◽  
Peipei Cen ◽  
Fengqing An ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Easy Axis ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

Single-ion-magnet-type field-induced double magnetic relaxation was observed in a one-dimensional cobalt(ii) coordination polymer which shows easy-axis anisotropy with D = −33.9 cm−1 and an energy barrier of Ueff = 38.8 K.

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,...

Structural anisotropy of cyanido-bridged {CoII9WV6} single-molecule magnets induced by bidentate ligands: towards the rational enhancement of an energy barrier

2016 ◽  
Vol 52 (26) ◽  
pp. 4772-4775 ◽  
Author(s):  
Szymon Chorazy ◽  
Michał Rams ◽  
Anna Hoczek ◽  
Bernard Czarnecki ◽  
Barbara Sieklucka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Energy Barrier ◽  
Magnetic Relaxation ◽  
Bidentate Ligands ◽  
Single Molecule Magnets ◽  
Structural Anisotropy ◽  
Slow Magnetic Relaxation

{CoII9[WV(CN)8]6} clusters capped by odd and even number of bidentate ligands reveal the improved slow magnetic relaxation due to the significant structural anisotropy.

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].

Spin Ice‐like Magnetic Relaxation of a Two‐dimensional Network based on Manganese(III) Salen‐type Single‐Molecule Magnets

2020 ◽  
Vol 59 (49) ◽  
pp. 22048-22053
Author(s):  
Chihiro Kachi‐Terajima ◽  
Tasuku Eiba ◽  
Rikako Ishii ◽  
Hitoshi Miyasaka ◽  
Yuta Kodama ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Relaxation ◽  
Two Dimensional ◽  
Spin Ice ◽  
Single Molecule Magnets ◽  
Dimensional Network

scholarly journals Slow Magnetic Relaxation in a One-Dimensional Coordination Polymer Constructed from Hepta-Coordinate Cobalt(II) Nodes

2020 ◽  
Vol 6 (4) ◽  
pp. 45
Author(s):  
Amit Kumar Mondal ◽  
Arpan Mondal ◽  
Sanjit Konar
Keyword(s):  
Magnetic Susceptibility ◽  
Coordination Polymer ◽  
Magnetic Anisotropy ◽  
Ab Initio Calculations ◽  
Direct Current ◽  
Magnetic Relaxation ◽  
Relaxation Processes ◽  
Ac Magnetic Susceptibility ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

A one-dimensional coordination polymer was synthesized employing hepta-coordinate CoII as nodes and dicyanamide as linkers. Detailed direct current (DC) and alternating current (AC) magnetic susceptibility measurements reveal the presence of field-induced slow magnetic relaxation behavior of the magnetically isolated seven-coordinate CoII center with an easy-plane magnetic anisotropy. Detailed ab initio calculations were performed to understand the magnetic relaxation processes. To our knowledge, the reported complex represents the first example of slow magnetic relaxation in a one-dimensional coordination polymer constructed from hepta-coordinate CoII nodes and dicyanamide linkers.

scholarly journals Frontispiz: Spin Ice‐like Magnetic Relaxation of a Two‐dimensional Network based on Manganese(III) Salen‐type Single‐Molecule Magnets

2020 ◽  
Vol 132 (49) ◽  
Author(s):  
Chihiro Kachi‐Terajima ◽  
Tasuku Eiba ◽  
Rikako Ishii ◽  
Hitoshi Miyasaka ◽  
Yuta Kodama ◽  
...  
Keyword(s):  
Single Molecule ◽  
Magnetic Relaxation ◽  
Two Dimensional ◽  
Spin Ice ◽  
Single Molecule Magnets ◽  
Dimensional Network

Poly[deca-μ2-cyanido-dicyanidobis(μ2-ethylenediamine)bis(ethylenediamine)tricadmium(II)dicobalt(III)]: a two-dimensional coordination polymer

2009 ◽  
Vol 65 (3) ◽  
pp. m118-m120
Author(s):  
Olha Sereda ◽  
Helen Stoeckli-Evans
Keyword(s):  
Coordination Polymer ◽  
Network Structure ◽  
General Position ◽  
Rotation Axis ◽  
Three Dimensional ◽  
The Other ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Dimensional Network

The title coordination polymer, [Cd3Co2(CN)12(C2H8N2)4]n, has an infinite two-dimensional network structure. The asymmetric unit is composed of two crystallographically independent CdIIatoms, one of which is located on a twofold rotation axis. There are two independent ethylenediamine (en) ligands, one of which bis-chelates to the Cd atom that sits in a general position, while the other bridges this Cd atom to that sitting on the twofold axis. The Cd atom located on the twofold rotation axis is linked to four equivalent CoIIIatomsviacyanide bridges, while the Cd atom that sits in a general position is connected to three equivalent CoIIIatomsviacyanide bridges. In this way, a series of trinuclear, tetranuclear and pentanuclear macrocycles are linked to form a two-dimensional network structure lying parallel to thebcplane. In the crystal structure, these two-dimensional networks are linkedviaN—H...N hydrogen bonds involving an en NH2H atom and a cyanide N atom, leading to the formation of a three-dimensional structure. This coordination polymer is only the second example involving a cyanometallate where the en ligand is present in both chelating and bridging coordination modes.

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