The mechanism and origin of asymmetric induction in the Mn(III)(salen)-catalyzed epoxidation by peracetic acid have been elucidated by the density functional [Becke three-parameter hybrid functional combined with Lee-Yang-Parr correlation functional (B3LYP)] method in two different regimes: with and without an axial ligand. The acylperoxo complexes of Mn(II,III,IV) in cisON cisNO and trans geom...

Tandem mass spectrometric techniques in combination with high-level quantum chemical calculations have been employed to study the coordination chemistry of manganese– and oxomanganese–salen complexes in the gas phase. Electrospray ionization was used to transfer the ionic complexes from solution to the gas phase. The formation of fiveversus six-coordinate manganese(III) species was subsequently...

Two novel series of (salen)ruthenium(iii) complexes bearing guanidine and amidine axial ligands were synthesized, characterized, and evaluated for anticancer activity. In vitro cytotoxicity tests demonstrate that these complexes are cytotoxic against various cancer cell lines and the leading complexes have remarkable cancer-cell selectivity. A detailed study of the guanidine complex 7 and the a...

The importance of epoxides as synthetic intermediates in a number of highly added-value chemicals, as well as the search for novel and more sustainable chemical processes have brought considerable attention to the catalytic activity of manganese and iron complexes towards the epoxidation of alkenes using non-toxic terminal oxidants. Particular attention has been given to Mn(salen) and Fe(porphy...

Three new chiral Mn macrocycle catalysts containing 20 or 40 atoms in the were synthetized and tested enantioselective epoxidation of cis-β-ethyl-styrene 1,2-dihydronathalene. The effect presence a binaphtol (BINOL) compound catalyst backbone has been evaluated, including by Density Functional Theory (DFT) calculations.

Located in the middle of fever to solve problem CO2 emissions environment, sequestration by reaction with epoxides is one key tools, as it not only fixes CO2, but also makes functional leading cyclic carbonates. Herein, results are focused specifically on formation organic carbonates catalyzed metal-salen complexes, previously achieved yttrium and scandium, that compared those analogous complex...

The use of olefin metathesis as a construction tool for multimetallic salen-based structures is described. The approach involves mono- and diallyl-functionalized metallosalen complexes that can be directly coupled by metathesis leading to dimetallic species or mixtures of linear and cyclic oligomers. The metathesis of bis-allyl Ni(salen) complexes has been studied in detail. At high concentrati...