Formation of a novel ferromagnetic end-to-end cyanate bridged homochiral helical copper(ii) Schiff base complex via spontaneous symmetry breaking

2015 ◽  
Vol 44 (2) ◽  
pp. 493-497 ◽  
Author(s):  
Anik Bhattacharyya ◽  
Biswa Nath Ghosh ◽  
Santiago Herrero ◽  
Kari Rissanen ◽  
Reyes Jiménez-Aparicio ◽  
...  
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Schiff Base Complex ◽  
Exchange Interactions ◽  
Base Complex ◽  
Ferromagnetic Exchange ◽  
End To End

A homochiral helical coordination polymer of copper(ii) has been synthesized using achiral precursors. End-to-end cyanate bridges mediate ferromagnetic exchange interactions among copper(ii) centres.

Chlorido-Bridged MnII Schiff-Base Complex with Ferromagnetic Exchange Interactions

2007 ◽  
Vol 2007 (23) ◽  
pp. 3663-3668 ◽  
Author(s):  
Chuan-Min Qi ◽  
Xu-Xia Sun ◽  
Song Gao ◽  
Shu-Lan Ma ◽  
Da-Qiang Yuan ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Complex ◽  
Exchange Interactions ◽  
Base Complex ◽  
Ferromagnetic Exchange

Ferromagnetic exchange coupling in a new bis(μ-chloro)-bridged copper(II) Schiff base complex: Synthesis, structure, magnetic properties and catalytic oxidation of cycloalkanes

Polyhedron ◽  
2009 ◽  
Vol 28 (4) ◽  
pp. 695-702 ◽  
Author(s):  
Santarupa Thakurta ◽  
Partha Roy ◽  
Georgina Rosair ◽  
Carlos J. Gómez-García ◽  
Eugenio Garribba ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Catalytic Oxidation ◽  
Exchange Coupling ◽  
Schiff Base Complex ◽  
Base Complex ◽  
Ferromagnetic Exchange

A New Chloro-Bridged CuII Schiff Base Complex with Ferromagnetic Exchange Interaction

2007 ◽  
Vol 2007 (6) ◽  
pp. 846-851 ◽  
Author(s):  
Shu-Lan Ma ◽  
Xu-Xia Sun ◽  
Song Gao ◽  
Chuan-Min Qi ◽  
Hai-Bo Huang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Exchange Interaction ◽  
Schiff Base Complex ◽  
Base Complex ◽  
Ferromagnetic Exchange

scholarly journals Neutral Low-Dimensional Assemblies of a Mn(III) Schiff Base Complex and Octacyanotungstate(V): Synthesis, Characterization and Magnetic Properties

2017 ◽  
Author(s):  
Anna M. Majcher ◽  
Guillaume Pilet ◽  
Vladimir S. Mironov ◽  
Kira E. Vostrikova
Keyword(s):  
Schiff Base ◽  
Schiff Base Complex ◽  
Exchange Interactions ◽  
Magnetization Dynamics ◽  
Magnetic Studies ◽  
Base Complex ◽  
Self Assembling ◽  
Interchain Interactions ◽  
Low Dimensional ◽  
Microcrystalline Powder

Abstract: Two novel low-dimensional molecular magnetic materials were prepared by a self-assembling of 3d- and 5d-metal complexes. These are the first neutral heterobimetallic cyanobridged compounds involving one anisotropic Mn(III) Schiff base complex and one octacyanotungstate(V) per molecular unit. A slow diffusion of the constituents’ solutions leads to a formation of the 0D crystalline complex 1 due to coordination of a water molecule to the Mn center prevents a polymer formation. A rapid mixing of reagents results in a precipitation of the microcrystalline powder of the complex 2, which on a totality of experimental data possess 1D polymeric structure. The magnetic studies have shown that antiferromagnetic exchange interactions are dominating in 1 J/kB= -13.1(7) K, D=-3.0(1.3) K, zJ'= -0.16(20) K and gav=2.00(1); while the presence of the significant intramolecular Mn(III)–W(V) ferromagnetic couplings through cyanide bridges is characteristic for 2 (J/kB = 46.1(5) K gMn = 2.11(3), fixed gW = 2.0). Due to the weak interchain interactions, zJ'/kB = –0.8(2) K, compound 2 is a metamagnet with the Néel temperature of 9.5 K undergoing a spin-flip transition at 2 kOe. The slow magnetization dynamics of 2 was investigated at DС field of 0 and 2 kOe, giving the values of τ0 32(15) and 36(15) ps respectively, well within the range typical for SCMs. The respective ∆τ/kB values were 48.4(1.2) and 44.9(1.0) K.

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