Influence of ligands’ peripheral substituents on the structure, magnetochemical and electrochemical behaviour of complexes containing a Cu2O2 butterfly core

Solvent switchable CuII complexes

“…The resulting voltammetric curves are almost identical to those obtained for the dinuclear copper analog. 26 Two successive one-electron peaks were observed in the cathodic region (Fig. 3a).…”

“…Ligand H 3 L easily produces a dinuclear copper complex by the reaction with copper trimethylacetate dihydrate in dry methanol (Scheme 1, complex (2)). 26,27 However, a tetranuclear metal complex (1) can be obtained by mixing copper(II) acetate dihydrate with the ligand, H 3 L, at room temperature in a non-dried solvent mixture of methanol : ethylacetate (1 : 4) (Scheme 1). The structure of the newly synthesized complex (1) was determined by single crystal X-ray diffraction and characterized by usual physicochemical methods.…”

“…The investigation of the electrochemical behaviour of the tetranuclear copper(II) cluster [Cu 2 L(OH)] 2 Á2CH 3 OHÁH 2 O (1) in dry DMSO was done in order to compare it to that of a similar complex [Cu 2 L(OCH 3 )] (2), having the same tridentate ligand. 26 This complex [Cu 2 L(OCH 3 )] contains a Cu 2 O 2 butterfly core, but with a methoxy bridge instead of the hydroxo bridging ligand present in the complex under study. This comparison was done to elucidate whether the tetranuclear structure is retained in solution.…”

Copper(II) complexes containing pyridine‐based and phenolate‐based systems: Synthesis, characterization, DFT study, biomimetic catalytic activity of catechol oxidase and phenoxazinone synthase

“…Such a ligand was found to be more flexible and the N 2 O cavity, formed by a tri‐methylene lateral chain, has an appropriate size to accommodate a wide range of copper ions within the cavity . The range of copper(II) complexes synthesized from this ligand has then given a broad spectrum of research opportunity . It is necessary that studies of such systems, aiming to “mimic” the active sites of metalloproteins such as catechol oxidase, be further developed.…”

Structural and Surface Characterization of Newly Synthesized D‐π‐D Type Schiff Base Ligand: (1E,2E)‐3‐[4‐(Dimethylamino)phenyl]prop‐2‐en‐1‐ylidene)phenylamine

“…Moreover, the Schiff base compounds have been regarded as excellent fluorescent materials because of their ability to achieve high thermal stability as well as high photoluminescent efficiency. The conjugated Schiff base systems that contain electronically coupled photo-and/or redox-active sites across an unsaturated organic bridge are of considerable current interest [8][9][10][11][12][13].…”