Abebe, Asratie Nigussie (2010) Metal Complexes of a Pentadentate Ligand Structural Investigation. Masters thesis, Addis Ababa University.
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Abstract
Two new Fe (III) complexes of two different geometries were synthesized from a pentadentate ONONO donor ligand. The Schiff base ligand, BNSHIO, Bis-(NSalicylaldehyde)-1,3-inden-2-one was prepared and analyzed from our laboratory [7, 9, 10]. Ninhydrin, hydrazine hydrate, and salicylaldehyde were the precursors used in ligand synthesis. This ligand, by direct condensation with Fe(III) resulted in the formation of a new high spin complex, Fe(III)LD. Another new Fe(III)LT was synthesized by template method using the same precursors. Initially 1,3-Dihydrazonoinden-2-one (DHIO) was prepared by condensing ninhydrin with hydrazine hydrate, which was treated with Fe(III) and salicylaldehyde and refluxed. This resulted in a low spin complex, Fe (III)LT. The ligand to metal ratio was found to be 1:1 in both complexes. Fe (III)LT was found to be a cationic complex and Fe(III)LD was found to be a neutral complex. Based on the analytical, conductance, spectral, magnetic susceptibility, AAS, and UV-Vis, data, Fe (III)LD was proposed to have an octahedral geometry and Fe(III)LT was proposed a trigonal bipyramidal geometry. In both complexes, the ligand behaves as a pentadentate ONONO donor.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Schiff bases, Ninhydrin, hydrazine hydrate, Salicylaldehyde, pentadentate ONONO donor, Bis-(N-salicylaldehyde)-1,3-dihydrazono-inden-2-one (BNSDHIO),1,3-dihydrazono-inden-2-one(DHIO) |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Africana |
| Depositing User: | Selom Ghislain |
| Date Deposited: | 22 Jun 2018 09:19 |
| Last Modified: | 22 Jun 2018 09:19 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/4231 |
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