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

Transformation of a CuII Thiazolo‐1,2,4‐triazine Derivative from a Metastable Coordination Network to a Monomer in Solution and Vapor Conditions

“…The magnetic coupling in dichloro-bridged Cu 2+ complexes is very sensitive to the Cu-Cl-Cu angles, Cu-Cl distances, and distortions around the Cu 2+ ions, dramatically varying from antiferromagnetic to ferromagnetic interactions with small structural changes. [42][43][44][45][46][47] The ferromagnetic coupling between the Cu 2+ ions is also found in dichlorobridged dimers [31,32,[43][44][45][46][47] and chains [14,34] reported in the literature. In this work, two Cu-Cl-Cu angles of 5a are in the middle of the range for bis(μ-chloro)Cu 2+ dimer complexes, [31] which have the possibility of ferromagnetic and antiferromagnetic interactions in the intrachain structure.…”

Synthesis, Characterization and DFT-Based Investigation of a Novel Trinuclear Singly-Chloro-Bridged Copper(II)-1-Vinylimidazole Complex

“…Among these, polynuclear copper(II) species [4][5][6][7][8] are the most intriguing and investigated ones due to their plain structural properties, ability to mimic active sites in certain copper containing proteins and easy to rationalize and diverse magnetic properties as the simplest examples of magnetic exchange interactions. [9][10][11][12][13][14] From another standpoint, the selection or design of the organic ligands are of cruical importance on self-assembly of metal ions owing to their requisite functional roles as transmitters of close metalmetal communications other than they are the backbones of these polynuclear aggregates. [15][16][17] Generally, the use of polydentate ligands that can present different coordination behaviours according to nature of the metal ions is straightforward for aforementioned versatilities.…”

Crystal structure of di-μ2-chlorido-dichlorido-bis[(2-(1H-pyrazol-3-yl)- pyridine-κ2N,N’)dicopper(II)], C16H12Cl4Cu2N6

“…Thecalculated value of t =0.06indicates that thecoordinationgeometryaroundthe metal centre, although intermediate between the two ideal polyhedrons, is closer to an elongated tetra-gonal pyramid with chlorido anions placed alternatively on equatorial and apical positions. As aresult, the geometry of the complex consists of two square pyramids sharing one base-to-apex edge,withparallel basal planes [9]. TheCu 2 Cl 2 core corresponds to an almost ideal rectangle as reflected from the Cl-Cu-Cl andCu-Cl-Cubonda nglesof9 0.49 and89.58°, respectively.…”