Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand
The outer sphere electron transfer reaction of surfactant cobalt(III) complexes, Cis-[Co(en)2(4CNP)(C12H25NH2)](ClO4)3 1, Cis-[Co(trien)(4CNP)(C12H25NH2)](ClO4)3 2 and Cis-[Co(trien)(4AMP)(C12H25NH2)](ClO4)3 3 (en: ethylenediamine, trien: triethylenetetramine, 4CNP: 4-cyanopyridine, 4AMP: 4-aminopyr...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2019-12-01
|
Series: | Arabian Journal of Chemistry |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535214003402 |
id |
doaj-0decb3427d4248a2b827766470112864 |
---|---|
record_format |
Article |
spelling |
doaj-0decb3427d4248a2b8277664701128642020-11-25T01:37:09ZengElsevierArabian Journal of Chemistry1878-53522019-12-0112819451953Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligandK. Nagaraj0K. Senthil Murugan1P. Thangamuniyandi2S. Sakthiunathan3School of Chemistry, Bharathidasan University, Tiruchirapalli 620 024, Tamil Nadu, India; Corresponding author. Tel.: +91 9677836849.Post Graduate and Research Department of Chemistry, Vivekananda College, Tiruvedakam West, Madurai 625 234, Tamil Nadu, IndiaDepartment of Polymer Science, University of Madras, Guindy Campus, Chennai 600 025, Tamil Nadu, IndiaSchool of Chemistry, Bharathidasan University, Tiruchirapalli 620 024, Tamil Nadu, IndiaThe outer sphere electron transfer reaction of surfactant cobalt(III) complexes, Cis-[Co(en)2(4CNP)(C12H25NH2)](ClO4)3 1, Cis-[Co(trien)(4CNP)(C12H25NH2)](ClO4)3 2 and Cis-[Co(trien)(4AMP)(C12H25NH2)](ClO4)3 3 (en: ethylenediamine, trien: triethylenetetramine, 4CNP: 4-cyanopyridine, 4AMP: 4-aminopyridine, C12H25NH2: dodecylamine) have been investigated by Fe2+ ion in liposome vesicles (DPPC) and ionic liquids medium at different temperatures under pseudo first order conditions using an excess of the reductant. In the presence of ionic liquid medium the second order rate constant for this electron transfer reaction was found to increase with increasing concentration of ionic liquids. Below the phase transition temperature of DPPC, the rate decreased with increasing concentration of DPPC, while above the phase transition temperature the rate increased with increasing concentration of DPPC for the same complexes has also been studied. Experimentally the reactions were found to be second order and the electron transfer postulated as outer sphere. The results have been discussed in terms of increased hydrophobic effect, self aggregation and the presence of pyridine ligand containing 4-amino and 4-cyano substituent. Keywords: Surfactant cobalt(III) complex, Vesicles, Electron transfer, Hydrophobicity, Ionic liquids, Aggregationhttp://www.sciencedirect.com/science/article/pii/S1878535214003402 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
K. Nagaraj K. Senthil Murugan P. Thangamuniyandi S. Sakthiunathan |
spellingShingle |
K. Nagaraj K. Senthil Murugan P. Thangamuniyandi S. Sakthiunathan Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand Arabian Journal of Chemistry |
author_facet |
K. Nagaraj K. Senthil Murugan P. Thangamuniyandi S. Sakthiunathan |
author_sort |
K. Nagaraj |
title |
Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand |
title_short |
Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand |
title_full |
Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand |
title_fullStr |
Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand |
title_full_unstemmed |
Microheterogeneous mediated electron transfer reaction (ETR) of surfactant cobalt(III) complexes by Fe2+: Effect of pyridine substituent as co ligand |
title_sort |
microheterogeneous mediated electron transfer reaction (etr) of surfactant cobalt(iii) complexes by fe2+: effect of pyridine substituent as co ligand |
publisher |
Elsevier |
series |
Arabian Journal of Chemistry |
issn |
1878-5352 |
publishDate |
2019-12-01 |
description |
The outer sphere electron transfer reaction of surfactant cobalt(III) complexes, Cis-[Co(en)2(4CNP)(C12H25NH2)](ClO4)3 1, Cis-[Co(trien)(4CNP)(C12H25NH2)](ClO4)3 2 and Cis-[Co(trien)(4AMP)(C12H25NH2)](ClO4)3 3 (en: ethylenediamine, trien: triethylenetetramine, 4CNP: 4-cyanopyridine, 4AMP: 4-aminopyridine, C12H25NH2: dodecylamine) have been investigated by Fe2+ ion in liposome vesicles (DPPC) and ionic liquids medium at different temperatures under pseudo first order conditions using an excess of the reductant. In the presence of ionic liquid medium the second order rate constant for this electron transfer reaction was found to increase with increasing concentration of ionic liquids. Below the phase transition temperature of DPPC, the rate decreased with increasing concentration of DPPC, while above the phase transition temperature the rate increased with increasing concentration of DPPC for the same complexes has also been studied. Experimentally the reactions were found to be second order and the electron transfer postulated as outer sphere. The results have been discussed in terms of increased hydrophobic effect, self aggregation and the presence of pyridine ligand containing 4-amino and 4-cyano substituent. Keywords: Surfactant cobalt(III) complex, Vesicles, Electron transfer, Hydrophobicity, Ionic liquids, Aggregation |
url |
http://www.sciencedirect.com/science/article/pii/S1878535214003402 |
work_keys_str_mv |
AT knagaraj microheterogeneousmediatedelectrontransferreactionetrofsurfactantcobaltiiicomplexesbyfe2effectofpyridinesubstituentascoligand AT ksenthilmurugan microheterogeneousmediatedelectrontransferreactionetrofsurfactantcobaltiiicomplexesbyfe2effectofpyridinesubstituentascoligand AT pthangamuniyandi microheterogeneousmediatedelectrontransferreactionetrofsurfactantcobaltiiicomplexesbyfe2effectofpyridinesubstituentascoligand AT ssakthiunathan microheterogeneousmediatedelectrontransferreactionetrofsurfactantcobaltiiicomplexesbyfe2effectofpyridinesubstituentascoligand |
_version_ |
1725059396480794624 |