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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Anbalagan, K | - |
| dc.date.accessioned | 2013-05-13T06:50:57Z | - |
| dc.date.available | 2013-05-13T06:50:57Z | - |
| dc.date.issued | 2005-04 | - |
| dc.identifier.issn | 0975-0975(Online); 0376-4710(Print) | - |
| dc.identifier.uri | http://hdl.handle.net/123456789/18060 | - |
| dc.description | 667-672 | en_US |
| dc.description.abstract | Photoreduction quantum yields of Co(en)2Cl(RC6H4NH2)2+ (where R = p-OMe, p-OEt, p-Me, m-Me, H and p-F) in water-isopropanol mixtures (15, 20, 25, 30, 35 and 40% (v/v) organic cosolvent) at 25°C, ionic strength i = 0.1 M (NaNO3), have been subjected to phenomenological model of solvent effect. The quantum yield values obtained from different solvent compositions are fitted into a simple and multiple regression model equations to understand and quantify medium influence. The solvent effects are explained by statistical equations, which can establish nonspecific (Laidler-Eyring, 1/εr, plot), specific (extended Krygowski-Fawcett 's, ETNand β) and both nonspecific/specific (Kamlet-Taft's, α , β, and π*) solvation effects. A quantitative measure on solvation effect using the respective coefficients is attempted. The observed substituent effect (Hammett 's σ plot) is explained for the electronic contribution leading to stability of excited state [COII .L]2+ or less polar geminate radical pair [COII .L]2+. From the results it is concluded that photoreduction proceeds th rough a less polar geminate radical pair [COII .L]2+ that is stabilized by an electron donating group (p-OMe) of the sixth ligand (RC6H4NH2) or by decreasing the polarity of the medium. | en_US |
| dc.language.iso | en_US | en_US |
| dc.publisher | NISCAIR-CSIR, India | en_US |
| dc.relation.ispartofseries | Int. Cl7. C07133 1/00; C07F15/06 | en_US |
| dc.rights |  CC Attribution-Noncommercial-No Derivative Works 2.5 India | en_US |
| dc.source | IJC-A Vol.44A(04) [April 2005] | en_US |
| dc.title | Photoreduction of Co(en)2Cl(RC6H4NH2)2+ in water— isopropanol solutions: Solvent and structure reactivity correlation analysis | en_US |
| dc.type | Article | en_US |
| Appears in Collections: | IJC-A Vol.44A(04) [April 2005] | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 44A(4) 667-672.pdf | 1.38 MB | Adobe PDF | View/Open |
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