Metallation of tetradentate N2O2 Schiff base with Mn(II), Co(II), Cu(II) and Zn(II): synthesis, characterization and formation constants measurement

Abstract

H NMR spectroscopy, mass spectrometry and elemental analysis. The formation constants and the Gibbs free energies were measured spectrophotometrically for 1:1 complexes in methanol in constant ionic strength (I = 0.1 mol dm -3 NaClO 4 ) and at 25˚C. The data refinement was carried out with the SQUAD program. The trend of formation constants of H 2 L 1 with M(II) follows the order: Mn(II) (3.97) < Zn(II) (4.30) < Co(II) (4.89) < Cu(II) (5.73) Also, the trend of formation constants of ligand toward a given metal (for example Mn) is as follows:H 2 L

Aluminium salabza complexes for fixation of CO2 to organic carbonates

“…The synthesis of other Cu, Ti, Mn, Co, Zn and Al complexes with similar salabza-type ligands have already been reported. [31][32][33][34] A Co(III) complex with a 2,2-dimethylpropyldiamine related skeleton was reported to produce low conversion in the copolymerisation of CO 2 with cyclohexene oxide. 35…”

Immobilization of CoII‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine) on Poly(pyrrole‐co‐o‐anisidine)/Chitosan Composite Films: Application to Electrocatalytic Oxidation of Catechol

“…The Schiff base metal complex (CoL) ( Figure 1b) synthesized by the method known from the literature was readily provided [29,30]. The immobilization of the CoL complex onto the surface of composite films was carried out by using three-electrode method with cyclic voltammetry technique.…”