Thermal and spectral studies on complexes derived from tetradentate Schiff bases |
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Authors: | H. M. Abdel-Fattah A. L. El-Ansary N. S. Abdel-Kader |
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Affiliation: | (1) Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt |
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Abstract: | Several new complexes of Schiff bases ligands H4La and H4Lb with transition metal ions such as Cr(III), Fe(III), Co(II) and Zn(II) are synthesized. Elemental analysis, infrared, UV–Vis and thermal analysis, as well as conductivity and magnetic susceptibility measurements are used to elucidate the structure of the newly prepared metal complexes. A square planar geometry is suggested for Zn(II) complexes, while an octahedral geometry suggested for the Cr(III), Fe(III) and Co(II) complexes. The thermal decomposition of complexes was found to be first order reaction and the thermodynamic parameters corresponding to the different decomposition steps were reported. |
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Keywords: | Schiff bases Thermal analysis Transition metal chelates IR UV– Vis Magnetic measurements |
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