Molecular structure and catalytic activity of Fe(III) coordination compound with ONO-donor hydrazone ligand in the oxidation of cyclooctene by H2O2

A new mononuclear Fe(III) hydrazone Schiffbase coordination compound, [Fe(HL)Cl-2]center dot CH3OH (1), was synthesized and characterized by spectroscopic methods and elemental analyses. The compound was obtained by the reactions of FeCl3 center dot 6H(2)O and ONO-donor hydrazone Schiffbase ligand (H2L = (E)-3-hydroxyN'-((Z)-4-hydroxy-4-phenylbut-3-en-2-ylidene)-2-naphthohydrazide) in methanol. The structure of compound 1 was also determined by single crystal X-ray diffraction studies. The catalytic activity of compound 1 was investigated in oxidation of cyclooctene by hydrogen peroxide as a green oxidant and the effects of some influencing parameters like temperature, solvent and the ratio of the reagents were investigated. The results of studies indicated these parameters have considerable effect on the catalytic activity of compound 1. The interaction of compound 1 and H2O2 was studied by UV-Vis spectroscopy and the results showed new catalytically active species form by their interactions which act as intermediates in oxidation process of substrate. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

A new mononuclear Fe(III) hydrazone Schiffbase coordination compound was successfully synthesized and its catalytic activity in the oxidation of cyclooctene by hydrogen peroxide was investigated. The study showed that influencing parameters like temperature, solvent, and the ratio of reagents have a considerable effect on the catalytic activity of the compound. Additionally, UV-Vis spectroscopy revealed new catalytically active species formed by the interaction between the compound and H2O2, serving as intermediates in the oxidation process of the substrate.