<b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b>
A multidentate ligand, 3,4-bis(2-iminomethylphenol)-2,2’:5,2’’-terthiophene (L), has been synthesized by the condensation of 3,4-diamino-2,2’:5,2’’-terthiophene and salicylaldehyde. The ligand and Ni(II) and Zn(II) complexes were synthesized and characterized by IR, NMR, UV-Vis, AAS, MS, molar condu...
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| Format: | Article |
| Language: | English |
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Chemical Society of Ethiopia
2011-08-01
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| Series: | Bulletin of the Chemical Society of Ethiopia |
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| Online Access: | http://www.ajol.info/index.php/bcse/article/view/65886 |
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| author | Hillete Hailu Berhane Atsbeha Shimelis Admassie Wendimagegn Mammo V.J.T. Raju Yonas Chebude |
| author_facet | Hillete Hailu Berhane Atsbeha Shimelis Admassie Wendimagegn Mammo V.J.T. Raju Yonas Chebude |
| author_sort | Hillete Hailu |
| collection | DOAJ |
| description | A multidentate ligand, 3,4-bis(2-iminomethylphenol)-2,2’:5,2’’-terthiophene (L), has been synthesized by the condensation of 3,4-diamino-2,2’:5,2’’-terthiophene and salicylaldehyde. The ligand and Ni(II) and Zn(II) complexes were synthesized and characterized by IR, NMR, UV-Vis, AAS, MS, molar conductivity and magnetic susceptibility measurements. The ligand behaves as neutral ONS-ONS bis-chelant towards Ni(II) in [Ni<sub>2</sub>LCl<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>]4H<sub>2</sub>O and as dibasic ONNO donor towards Zn(II) in [ZnL(NH<sub>3</sub>)<sub>2</sub>]. The dinuclear Ni(II) complex exhibits subnormal magnetic moment at room temperature due to metal-metal interaction through extended conjugation. The participation of the ring sulfur in bonding towards Ni(II) and the non-participation of the same towards Zn(II) are notable features. Octahedral geometries are proposed for both complexes. Cyclic voltammetric studies revealed electrochemical polymerization of the free ligand (L) but not of the Ni(II) and Zn(II) complexes. |
| first_indexed | 2024-12-20T05:19:52Z |
| format | Article |
| id | doaj.art-abf841bb2e9348cf874aa50c3fe4da9f |
| institution | Directory Open Access Journal |
| issn | 1011-3924 1726-801X |
| language | English |
| last_indexed | 2024-12-20T05:19:52Z |
| publishDate | 2011-08-01 |
| publisher | Chemical Society of Ethiopia |
| record_format | Article |
| series | Bulletin of the Chemical Society of Ethiopia |
| spelling | doaj.art-abf841bb2e9348cf874aa50c3fe4da9f2022-12-21T19:52:02ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2011-08-01252221231<b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b>Hillete HailuBerhane AtsbehaShimelis AdmassieWendimagegn MammoV.J.T. RajuYonas ChebudeA multidentate ligand, 3,4-bis(2-iminomethylphenol)-2,2’:5,2’’-terthiophene (L), has been synthesized by the condensation of 3,4-diamino-2,2’:5,2’’-terthiophene and salicylaldehyde. The ligand and Ni(II) and Zn(II) complexes were synthesized and characterized by IR, NMR, UV-Vis, AAS, MS, molar conductivity and magnetic susceptibility measurements. The ligand behaves as neutral ONS-ONS bis-chelant towards Ni(II) in [Ni<sub>2</sub>LCl<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>]4H<sub>2</sub>O and as dibasic ONNO donor towards Zn(II) in [ZnL(NH<sub>3</sub>)<sub>2</sub>]. The dinuclear Ni(II) complex exhibits subnormal magnetic moment at room temperature due to metal-metal interaction through extended conjugation. The participation of the ring sulfur in bonding towards Ni(II) and the non-participation of the same towards Zn(II) are notable features. Octahedral geometries are proposed for both complexes. Cyclic voltammetric studies revealed electrochemical polymerization of the free ligand (L) but not of the Ni(II) and Zn(II) complexes.http://www.ajol.info/index.php/bcse/article/view/65886Variable denticity34-bis(2-Iminomethylphenol)-22’:52’’-terthiopheneOctahedralNi(II) complexZn(II) complexVoltammetric studies |
| spellingShingle | Hillete Hailu Berhane Atsbeha Shimelis Admassie Wendimagegn Mammo V.J.T. Raju Yonas Chebude <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> Bulletin of the Chemical Society of Ethiopia Variable denticity 3 4-bis(2-Iminomethylphenol)-2 2’:5 2’’-terthiophene Octahedral Ni(II) complex Zn(II) complex Voltammetric studies |
| title | <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> |
| title_full | <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> |
| title_fullStr | <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> |
| title_full_unstemmed | <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> |
| title_short | <b>Variable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies</b> |
| title_sort | b variable denticity of a multidentate terthiophene derivative towards ni ii and zn ii structural studies b |
| topic | Variable denticity 3 4-bis(2-Iminomethylphenol)-2 2’:5 2’’-terthiophene Octahedral Ni(II) complex Zn(II) complex Voltammetric studies |
| url | http://www.ajol.info/index.php/bcse/article/view/65886 |
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