Catechol oxidation promoted by bridging phenoxo moieties in a bis(μ-phenoxo)-bridged dicopper(ii) complex

Abstract

A bis(μ-phenoxo)-bridged dicopper(ii) complex capable of oxidizing catechol with the highest efficiency amongst any bis(μ-phenoxo)-bridged dicopper(ii) complexes is reported.

Tailored design, synthesis, and catalytic aspects of mononuclear cis-dichloro copper(ii) complexes with simple DPA-derived tridentate ligands and their biomimicking activities

“…In terms of reports, PHS activity has not been thoroughly investigated in the last decades despite catechol oxidation receiving lots of interest. 10–38 The emergence of model complexes ensured a steady increase in the number of articles although contribution towards the structure–activity relationship has not been explored much.…”

Magnetostructural Properties of Some Doubly-Bridged Phenoxido Copper(II) Complexes

“…Dinuclear copper(II) complexes in which the Cu(II) ions are bridged by a phenolate oxygen atoms (L-O) and an exogenous bridging atom X with the coordination core Cu(µ-L-O)(µ-X) Cu (X = L-O, OH − , OR − , O 2− , OAc − , N 3 − and Cl − ) have been reported for a number of ligands with different skeletons frames [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Some of these complexes have served as cooperative model systems to mimic the active sites in metalloproteins, such as hemocyanin [ 12 , 13 , 14 , 15 , 16 ], metalloenzymes, such as tyrosinase [ 16 , 17 , 18 ], galactose oxidase (GOase) [ 19 , 20 , 21 , 22 , 23 , 24 ], superoxide dismutase (SOD) [ 25 , 26 , 27 ], and as artificial nucleases for promoting the cleavage of DNA [ 5 , 6 , 28 , 29 ] as well as anticancer agents [ 30 , 31 ].…”

“…The non-covalent bonding interactions (H-bonding, π···π, stacking interactions, and van der Waals’ force) have also been reported to affect the molecular magnetism in these systems [ 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 ]. In general, strong super exchange antiferromagnetic coupling (AF) was observed in the bridged phenolate compounds [ 25 , 26 , 27 , 33 , 41 , 43 , 51 , 52 , 53 , 54 ] but, in a few cases very weak ferromagnetic properties (F) were found [ 4 , 22 , 25 , 54 ].…”

Copper(ii) salen-based complexes as potential anticancer agents

“…10 Among the transition metal ions, Schiff base complexes of 3d metal ions have attracted the greatest attention due to their facile coordination ability and suitable biomimetic properties. [18][19][20] These biomimetic properties include catecholase oxidation, [21][22][23][24] antifungal 25,26 and antiviral properties, etc. 27,28 In the past few years, specifically after the successful discovery of cisplatin, the 3d metal complexes of different ligands including Schiff bases have been widely explored in medicine, especially in the pharmaceutical field, because of their ability to act as DNA-targeting agents.…”