Catalytic oxidation of organic sulfides by new iron-chloro Schiff base complexes: The effect of methoxy substitution and ligand isomerism on the electronic, electrochemical and catalytic performance of the complexes

Four new iron-chloro Schiff base complexes were used as catalyst for selective oxidation of sulfides and the results are discussed based on the presence of OMe substitution and ligand isomerism. [Display omitted] Four new Fe(III)-Chloro Schiff base complexes were synthesized and characterized. The N...

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Published in:Polyhedron Vol. 200; pp. 115135 - 115142
Main Authors: Aghvami, Fatemeh, Ghaffari, Abolfazl, Kucerakova, Monika, Dusek, Michal, Karimi-Nami, Rahman, Amini, Mojtaba, Behzad, Mahdi
Format: Journal Article
Language:English
Published: OXFORD Elsevier Ltd 15.05.2021
Elsevier
Subjects:
Catalysis
Chemistry
Chemistry, Inorganic & Nuclear
Crystallography
Iron-chloro
Physical Sciences
Schiff base
Science & Technology
Sulfoxidation
Schiff base
Catalysis
Sulfoxidation
Iron-chloro
SULFOXIDES
FE(III)
SELECTIVE OXIDATION
COPPER(II)
SALEN
CRYSTAL
ISSN:0277-5387, 1873-3719
Online Access:Get full text
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Summary:Four new iron-chloro Schiff base complexes were used as catalyst for selective oxidation of sulfides and the results are discussed based on the presence of OMe substitution and ligand isomerism. [Display omitted] Four new Fe(III)-Chloro Schiff base complexes were synthesized and characterized. The N2O2 type tetradentate Schiff base ligands were synthesized from the condensation of meso-1,2-diphenyl-1,2-ethylenediamine with salicylaldehyde (H2L1), 3-methoxysalicylaldehyde (H2L2), 4-methoxysalicylaldehyde (H2L3) and 5-methoxysalicylaldehyde (H2L4). The corresponding iron-chloro complexes with the general formula [Fe(Ln)Cl] (n = 1–4 for complexes (1–4)) were characterized by FTIR and UV–Vis spectroscopy and elemental analysis. Crystal structure of (1) was obtained by single-crystal X-ray crystallography. Cyclic voltammetry was used to study the electrochemistry of the complexes. The complexes were used as catalysts for the selective oxidation of organic sulfide compounds to sulfoxides. High catalytic performance and selectivity were obtained. The spectroscopic, electrochemical and catalytic data are discussed based on the electronic, steric and electrochemical properties of the complexes.
ISSN:0277-5387
1873-3719
DOI:10.1016/j.poly.2021.115135