European Journal of Chemistry

Synthesis, physicochemical, thermal, fluorescence and catalytic activity studies of novel Mn(II), Co(II), Ni(II) and Cu(II) complexes with tridentate (ONS) Schiff base ligand

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Published: Mar 31, 2017
DOI: https://doi.org/10.5155/eurjchem.8.1.85-95.1513
Keywords:
ONS donor sites, Catalytic activity, Thermal analysis, Schiff base ligand, Metals complexes, Fluorescence spectra, 2-((1-(Thiophen-2-yl)ethylidene)amino)phenol
Section
Research Article
Issue
Vol. 8 No. 1 (2017): March 2017
Dates
Received 2016-12-02
Accepted 2017-01-07
Published 2017-03-31


Main Article Content

Manara Ahmed Ayoub
Chemistry Department, Faculty of Women for Arts, Science and Education, Ain-Shams University, Cairo, 11757, Egypt
Eman Hamed Abd-Elnasser
Chemistry Department, Faculty of Women for Arts, Science and Education, Ain-Shams University, Cairo, 11757, Egypt
Mona Abdel-Aziz Ahmed
Chemistry Department, Faculty of Women for Arts, Science and Education, Ain-Shams University, Cairo, 11757, Egypt
Marium Girgis Rizk
Chemistry Department, Faculty of Women for Arts, Science and Education, Ain-Shams University, Cairo, 11757, Egypt

Abstract

Syntheses and physicochemical studies of Mn(II), Co(II), Ni(II) and Cu(II) complexes with tridentate Schiff base ligand (E)-2-((1-(thiophen-2-yl)ethylidene)amino)phenol (HL)(ATS) were characterized by elemental analysis, FT-IR, Mass, 1H NMR, UV-Vis, magnetic moment, thermal analysis (TG and DTG) techniques, molar conductance and fluorescence spectra. The IR spectra showed that complexes were coordinated in metal ions via the imine N, O and S atoms. Magnetic and UV-Vis spectra, indicated that the geometrical structure of Mn(II), Co(II) and Ni(II) complexes are an octahedral while Cu(II) is a tetrahedral. The kinetic thermodynamic parameters such as E*, DH*, DS* and DG* were determined for each thermal degradation stage of TG curves of the metal(II) complexes using Coat-Redfern method. Fluorescence studies indicated that the Schiff base ligand HL(ATS), and its metal(II) complexes can serve as potential photoactive materials as indicated from their characteristic fluorescence properties and study the effect of solvent and pH on it. The catalytic activities of metal(II) complexes were studied using H2O2 solution.


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Ayoub, M. A.; Abd-Elnasser, E. H.; Ahmed, M. A.-A.; Rizk, M. G. Synthesis, Physicochemical, Thermal, Fluorescence and Catalytic Activity Studies of Novel Mn(II), Co(II), Ni(II) and Cu(II) Complexes With Tridentate (ONS) Schiff Base Ligand. Eur. J. Chem. 2017, 8, 85-95.

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