Synthesis and Physico-Chemical Studies of Polyamide Macrocyclic Metal Complexes
| dc.contributor.advisor | Shakir, Mohammad (Professor) | |
| dc.contributor.author | Ashagrie, Getinet | |
| dc.date.accessioned | 2018-06-19T07:17:08Z | |
| dc.date.accessioned | 2023-11-09T16:17:33Z | |
| dc.date.available | 2018-06-19T07:17:08Z | |
| dc.date.available | 2023-11-09T16:17:33Z | |
| dc.date.issued | 1999-06 | |
| dc.description.abstract | The synthesis of bis(macrocyclic) complexes bearing tetraamide groups has been achieved by template condensation reaction between propylenediatnine, formaldehyde, benzidine, and succinic acid in the molar ratio of 4:4:1:2, respectively. The appearance of four characteristic amide bands and two single sharp bands corresponding to u(N -H) of secondary of secondary amine and coordinated amide groups at their appropriate positions and the absence of bands assignable to primary' amine and hydroxyl group in the IR spectra strongly suggest the formation of the proposed macrocylic framework. The assigned band positions in the electronic spectra of Co(II), Ni(II) and Cu(II) confirm their octahedral geometry'. However, the low molar conductivity' values indicate their lion-electrolytic nature. The results of elemental analyses agree well with the proposed stoichiometry' of the bis(macrocyclic) complexes A new series of polyamide macrocyclic complexes have also been prepared by' condensation reaction of hydrazine hydrate and succinic acid with metal ion in 4:4:1 molar ratio, respectively'. The diagnostic amide bands appearing at their appropriate positions and two single bands corresponding to u(N-H) of coordinated amide and uncoordinated amide gr oup and non -existence of uncondensed bands corresponding to primary' amino and hy'droxyl groups provide enough evidence for the formation of the proposed macrocyclic structure. Two major peaks, a broad signal in the region 8.0- 8.8 ppm and a broad signal in the region 2.3-3.2 ppm in the H NMR spectrum of the zinc(II) complex corresponding to amide group protons (CO-NH, 8 H) and methylene protons of dicarboxylic moiety (CO- (CI Qj-CO, 16H) further conoborates the proposed macrocyclic framework . The band positions hi the electronic spectra of Co(II) and Cu(II) and conductivity' data supported their final geometry'. The stoichiometry' has been confirmed on the basis of elemental analysis . | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/1516 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa Universty | en_US |
| dc.subject | macrocyclic metal complexes | en_US |
| dc.title | Synthesis and Physico-Chemical Studies of Polyamide Macrocyclic Metal Complexes | en_US |
| dc.type | Thesis | en_US |