Abstract
Azo Schiff base complexes of VO(II), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) have been synthesized from 4‐((4‐chlorophenyl)diazenyl)‐2‐((p‐tolylimino)methyl)phenol (CDTMP). The nature of bonding and the structural features of the complexes have been deduced from elemental analysis, molar conductance, magnetic susceptibility measurements, IR, UV‐Vis, 1H‐NMR, EPR, mass, SEM, and fluorescence spectral studies. Spectroscopic and other analytical studies reveal square‐planar geometry for copper, square‐pyramidal geometry for oxovanadium, and octahedral geometry for other complexes. The EPR spectra of copper(II) complex in DMSO at 300 K and 77 K were recorded, and its salient features are reported. Antimicrobial studies against several microorganisms indicate that the complexes are more potent bactericides and fungicides than the ligand. The electrochemical behavior of the copper(II) complex was studied by cyclic voltammetry. All the synthesized compounds can serve as potential photoactive materials as indicated from their characteristic fluorescence properties. The second harmonic conversion efficiency of the synthesized azo Schiff base was found to be higher than that of urea and KDP (potassium dihydrogen phosphate). SEM image of copper(II) complex implies the crystalline state and surface morphology of the complex.
Highlights
Azo compounds are the largest class of industrially synthesized organic dyes due to their versatile application in various elds, such as dyeing textile ber, biomedical studies, and advanced application in organic synthesis and high technology areas such as laser, liquid crystalline displays, and electrooptical devices [1]. e oxidation-reduction behaviors of these compounds play an important role in its biological activity [2, 3]. e architectural beauty of these coordination complexes arises due to the interesting ligand systems containing different donor sites [4]
It could be expected that design and synthesis of transition metal complexes derived from azo Schiff base ligands might be a possible way to obtain the applicable nonlinear optical materials [9]
Because of the importance of azo-containing compounds and our interest in syntheses of nonlinear optical materials, we report the syntheses, spectroscopic studies and biological activities of azo Schiff base derivative 4-((4-chlorophenyl)diazenyl)-2((p-tolylimino)methyl)phenol (CDTMP) which have donor and acceptor property due to electron-pull and electron-push substituents (Cl and CH3 groups) and their VO(II), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes
Summary
Azo compounds are the largest class of industrially synthesized organic dyes due to their versatile application in various elds, such as dyeing textile ber, biomedical studies, and advanced application in organic synthesis and high technology areas such as laser, liquid crystalline displays, and electrooptical devices [1]. e oxidation-reduction behaviors of these compounds play an important role in its biological activity [2, 3]. e architectural beauty of these coordination complexes arises due to the interesting ligand systems containing different donor sites [4]. It could be expected that design and synthesis of transition metal complexes derived from azo Schiff base ligands might be a possible way to obtain the applicable nonlinear optical materials [9].
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