Spectroscopy is the study of matter interacting with electromagnetic radiation (e.g., light). The electromagnetic spectrum in Figure 1 illustrates the many different types of electromagnetic radiation, including gamma rays (γ-rays), X-rays, ultraviolet (UV) radiation, visible light, infrared (IR) radiation, microwaves, and radio waves. The frequency (ν) and wavelength (λ) ranges associated with each form of radiant energy are also indicated in Figure 1.

Introduction to Spectroscopy

Schiff bases, named after Hugo Schiff, are aldehyde- or ketone-like compounds in which the carbonyl group is replaced by imine or azomethine group. They are widely used for industrial purposes and also have a broad range of applications as antioxidants. An overview of antioxidant applications of Schiff bases and their complexes is discussed in this review. A brief history of the synthesis and reactivity of Schiff bases and their complexes is presented. Factors of antioxidants are illustrated and discussed. Copyright © 2016 John Wiley & Sons, Ltd.

Synthesis and antioxidant activities of Schiff bases and their complexes: a review

Schiff bases and their complexes are good candidates as versatile compounds which are synthesized by the condensation of a primary amino compound with either aldehydes or ketones for a variety of industrial applications. They can act as catalysts in the catalytic oxidation of organic compounds. Recent researches in oxidation catalysis have focused on how to employ the metal-catalyzed oxidation of organic substrates. This review summarizes the current developments of the last few decades for the oxidations of organic compounds that proceed through Schiff base complexes. The chemical syntheses of Schiff bases and their complexes are outlined.

Schiff base complexes and their versatile applications as catalysts in oxidation of organic compounds: part I

Self-assembly of hierarchical N-heterocycles-inorganic materials into three-dimensional structure for superior corrosion protection

Synthesis, characterization, and biological activity of Schiff bases metal complexes

The synthesis of (N2O2S2)-Schiff base ligands and investigation of their ion extraction capability from aqueous media.

Solvent extraction of chromium and copper using Schiff base derived from terephthaldialdehyde and 5-amino-2-methoxy-phenol

The synthesis of N2O2-Schiff base ligand and bulk liquid membrane transport of Cu2+

Two new macrocyclic hydrazone Schiff bases were synthesized by reaction of succindihydrazide and adipdihydrazide with acetylacetone. Hydrazones have been characterized by elemental analyses and IR, mass, 1H NMR, and 13C NMR spectral data. Hydrazones have been studied by liquid-liquid extraction towards the s-metal ions (Li

/pdf/synthesis-of-macrocyclic-bis-hydrazone-and-their-use-in-45hyk16jbx.pdf

Synthesis of macrocyclic bis-hydrazone and their use in metal cations extraction.

New Schiff bases containing nitrogen, sulfur and oxygen donor atoms, were designed and synthesized in a multi—step reaction sequence. The Schiff base(I) was used in solvent extraction of metal chlorides such as Cu(II) from aqueous phase to the organic phase. The influences of the parameter functions, such as pH, solvent, ionic strength of aqueous phase, aqueous to organic phase, and concentration of the extractant were investigated to shed light on their chemical extracting properties upon the extractability of metal ions. The effect of chloroform, dichloromethane, and nitrobenzene as organic solvents over the metal chlorides extraction was investigated at 25 ± 0.1°C by using flame atomic absorption and the result is that the ability of extraction in solvents as follows C6H5NO2 > CHCl3 > CH2Cl2.

Farouk Kandil

Papers

The synthesis of (N2O2S2)-Schiff base ligands and investigation of their ion extraction capability from aqueous media.

Solvent extraction of chromium and copper using Schiff base derived from terephthaldialdehyde and 5-amino-2-methoxy-phenol

The synthesis of N2O2-Schiff base ligand and bulk liquid membrane transport of Cu2+

Synthesis of macrocyclic bis-hydrazone and their use in metal cations extraction.

The Synthesis and Characterization of New Schiff Bases and Investigating them in Solvent Extraction of Chromium and Copper