Structure, magnetic anisotropy and relaxation behavior of seven-coordinate Co(ii) single-ion magnets perturbed by counter-anions

2020 ◽  
Vol 49 (22) ◽  
pp. 7620-7627 ◽  
Author(s):  
Gangji Yi ◽  
Chunyang Zhang ◽  
Wen Zhao ◽  
Huihui Cui ◽  
Lei Chen ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Relaxation Behavior ◽  
Relaxation Processes ◽  
Coordination Unit ◽  
Slow Magnetic Relaxation

A series of mononuclear seven-coordinate complexes with the same coordination unit [Co(BPA-TPA)]2+ (BPA-TPA = pentapyidyldiamine) display the different slow magnetic relaxation processes perturbed by the variation of the counter anions.

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.

Magnetic anisotropy and slow magnetic relaxation processes of cobalt(ii)-pseudohalide complexes

2019 ◽  
Vol 48 (28) ◽  
pp. 10743-10752 ◽  
Author(s):  
Hui-Hui Cui ◽  
Yi-Quan Zhang ◽  
Xue-Tai Chen ◽  
Zhenxing Wang ◽  
Zi-Ling Xue
Keyword(s):  
Magnetic Anisotropy ◽  
Ab Initio ◽  
Magnetic Relaxation ◽  
Magnetic Measurements ◽  
Relaxation Processes ◽  
Slow Magnetic Relaxation

Magnetic measurements, HFEPR and ab initio calculations were used to study the magnetic anisotropies and magnetic relaxation of four cobalt(ii)-pseudohalide complexes.

scholarly journals Investigation of easy-plane magnetic anisotropy in P-ligand square-pyramidal CoII single ion magnets

2017 ◽  
Vol 53 (38) ◽  
pp. 5338-5341 ◽  
Author(s):  
Amit Kumar Mondal ◽  
Jesús Jover ◽  
Eliseo Ruiz ◽  
Sanjit Konar
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Easy Plane ◽  
Relaxation Behavior ◽  
Donor Ligand ◽  
Slow Magnetic Relaxation ◽  
First Time

Field induced slow magnetic relaxation behavior has been studied for the first time for two P-donor ligand-based square-pyramidal CoII complexes with an easy-plane magnetic anisotropy.

Cu(ii)–Dy(iii) and Co(iii)–Dy(iii) based single molecule magnets with multiple slow magnetic relaxation processes in the Cu(ii)–Dy(iii) complex

2015 ◽  
Vol 44 (29) ◽  
pp. 13242-13249 ◽  
Author(s):  
Malay Dolai ◽  
Mahammad Ali ◽  
Ján Titiš ◽  
Roman Boča
Keyword(s):  
Schiff Base ◽  
Single Molecule ◽  
Schiff Base Ligand ◽  
Magnetic Relaxation ◽  
Magnetic Behaviour ◽  
Dinuclear Complexes ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Slow Magnetic Relaxation

Two CuII–DyIII and CoIII–DyIII dinuclear complexes of a Schiff base ligand (H3L) exhibit single-molecule magnetic behaviour with multiple slow magnetic relaxation processes for the former.

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.

Magnetic field and dilution effects on the slow relaxation of {Er3} triangle-based arsenotungstate single-molecule magnets

2020 ◽  
Vol 49 (35) ◽  
pp. 12458-12465 ◽  
Author(s):  
Hanhan Chen ◽  
Lin Sun ◽  
Jinpeng Zhang ◽  
Zikang Xiao ◽  
Pengtao Ma ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Molecule ◽  
Magnetic Relaxation ◽  
Slow Relaxation ◽  
Relaxation Processes ◽  
Single Molecule Magnets ◽  
Thermally Activated ◽  
Slow Magnetic Relaxation ◽  
Dilution Effects

Triangular {Er3} cluster containing POM exhibits field-induced two thermally activated relaxation processes. Whereas, the diamagnetic dilution sample indicates slow magnetic relaxation with the QTM being partially suppressed.

Phosphine Oxide Ligand Based Tetrahedral Co II Complexes with Field‐induced Slow Magnetic Relaxation Behavior Modified by Terminal Ligands

2019 ◽  
Vol 14 (9) ◽  
pp. 1467-1471 ◽  
Author(s):  
Rui‐Chong Yang ◽  
Dan‐Ru Wang ◽  
Jun‐Liang Liu ◽  
Yu‐Fei Wang ◽  
Wei‐Quan Lin ◽  
...  
Keyword(s):  
Phosphine Oxide ◽  
Magnetic Relaxation ◽  
Relaxation Behavior ◽  
Slow Magnetic Relaxation

scholarly journals Slow magnetic relaxation in a {CoIICoIII2} complex containing a high magnetic anisotropy trigonal bipyramidal CoII centre

2018 ◽  
Vol 47 (28) ◽  
pp. 9237-9240 ◽  
Author(s):  
Alexandra Collet ◽  
Gavin A. Craig ◽  
María José Heras Ojea ◽  
Lakshmi Bhaskaran ◽  
Claire Wilson ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Relaxation ◽  
Easy Plane ◽  
Trigonal Bipyramidal ◽  
Slow Magnetic Relaxation

Incorporation of a trigonal bipyramidal CoII centre in {CoIICoIII2} leads to a large, easy-plane magnetic anisotropy and slow magnetic relaxation.

Sign in / Sign up

Export Citation Format

Share Document