Document Details
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Document Type |
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Thesis |
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Document Title |
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Physicochemical Studies On Some Synthesized Transition Metal Complexes of Some Azomethine Compounds دراسات فيزيقو كيميائية على بعض معقدات العناصر الإنتقالية المحضرة من بعض مركبات الآزوميثين |
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Subject |
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Girls' College of Education in Jeddah |
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Document Language |
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Arabic |
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Abstract |
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Azomethine compounds contain the azomethine group (-C=N-) such as hydrazones, Schiff bases, oximes, and azines. These compounds contributed in the progress of coordination chemistry in identify in the geometries and isomerism. The complexes containing azomethine ligands like those of the present work (Azine ligands) were studied on the first time by Ettling et. al. (1893). Pfeiffer and his co workers have been developed the principle methods for synthesizing the azomethine complexes and studied their physicochemical and structural properties. In this connection azomethines are considered as unique ligand systems, which have been employed as ligands for more than 150 years. Hundreds of papers on complexes of azomethines have been published in subsequent years.
In the present work, the ligands were prepared by the condensation of 4,6-diacetylresorcinol (DAR) with salicylal-dehyde hydrazone (SH) in molar ratio (1DAR:1SH) and (1DAR:2SH) and of the dihydrazone of (DAR) with Isatin in molar ratio (1DARDH:2Is), yields the corresponding azine ligands, abbreviated as H3La, H4Lb, and H2Lc. The structures of these ligands were investigated using elemental analyses, IR, Mass, 1H-NMR and Electronic spectral analyses. The azine, H3La, H4Lb, and H2Lc ligands were allowed to react with cobalt(II), nickel(II), copper(II), zinc(II), and cadmium(II) ions in 1:1, 2:1 or 1:2 molar ratio to produce the complexes. Some complexes exhibited an octahedral geometry and the other exhibited square planer or tetrahedral geometry.
The bonding sites are the azomethine nitrogen atom and phenolic oxygen atoms as well oxygen atoms of free of H2O, alc. or acetate. The complexes were identified by elemental, infrared, UV-Visible, and ESR spectral analyses, as well as magnetic susceptibility and molar conductance measurements. |
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Supervisor |
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Prof. Dr. Badr A. Elsayed |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1430 AH
2009 AD |
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Added Date |
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Saturday, February 6, 2010 |
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Researchers
| عيشة يوسف الداود | Al-Dawood, Aisha Yousef | Researcher | Doctorate | |
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