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http://nopr.niscpr.res.in/handle/123456789/18255| Title: | Kinetic solvent effects on reaction rates for the acidic hydrolysis of dihydroxamic acid |
| Authors: | Ghosh, Kallol K Patle, S K |
| Issue Date: | Apr-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Kinetic solvent effects on a key A-Ac-2 type reaction, i.e., acidic hydrolysis of succinodihydroxamic acid in aqueous mixtures (10-80% v/v) of some protic cosolvents viz methanol, ethanol, propan-2-ol and aprotic cosolvents viz 1,4-dioxane, acetonitrile, dimethyl sulphoxide, acetone, dimethylformamide have been analysed in the light of solvation energetics of the initial state and transition state. The observed log kΨ – solvent composition profiles reveal that the rate increases with increasing percentage of solvents. Linear solvation energy relationships and solvatochromic parameters (α, b, π*), effects of dielectric constant and ET have been applied to quantity solvent effects on reaction rates. The thermodynamic parameters (∆H҂ and ∆S҂) are sensitive to the structural changes in the bulk solvent phase. |
| Page(s): | 758-762 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.41A(04) [April 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 41A(4) 758-762.pdf | 865.01 kB | Adobe PDF | View/Open |
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