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.

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.

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 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,...

Two one-dimensional lanthanide compounds with pentagonal bipyramidal ErIII centers showing slow magnetic relaxation

Polyhedron ◽  
2018 ◽  
Vol 139 ◽  
pp. 289-295 ◽  
Author(s):  
Xing-Cai Huang ◽  
Shi-Chang Yan ◽  
Cheng-Long Ji ◽  
Zi-Yi Qi ◽  
Yi-Ming Guo ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

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].

ChemInform Abstract: A Rare One-Dimensional Dy(III) Complex Exhibiting Slow Magnetic Relaxation

ChemInform ◽  
2013 ◽  
Vol 44 (49) ◽  
pp. no-no
Author(s):  
Bo Na ◽  
Yu-Xia Wang ◽  
Tian Han ◽  
Wei Shi ◽  
Peng Cheng
Keyword(s):  
Magnetic Relaxation ◽  
One Dimensional ◽  
Slow Magnetic Relaxation

Slow Magnetic Relaxation in One-Dimensional Azido-Bridged CoII Complexes

2017 ◽  
Vol 56 (14) ◽  
pp. 8058-8067 ◽  
Author(s):  
Xin-Hua Zhao ◽  
Lin-Dan Deng ◽  
Yan Zhou ◽  
Dong Shao ◽  
Dong-Qing Wu ◽  
...  
Keyword(s):  
Magnetic Relaxation ◽  
One Dimensional ◽  
Slow Magnetic Relaxation
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