Kinetic and mechanistic studies on substitution reactions of aqua ligands from <em>cis</em>-diaqua-bis(biguanid)cobalt(III) with pyridine-2-aldoxime in various ethanol water mixture
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Kinetic and mechanistic studies on substitution reactions of aqua ligands from <em>cis</em>-diaqua-bis(biguanid)cobalt(III) with pyridine-2-aldoxime in various ethanol water mixture
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| Creator |
Mukhopadhyay, Chandi Charan
De, G S |
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| Description |
868-872
Kinetic studies on the substitution of aqua ligand of <em>cis</em>-diaqua-bis(biguanide)cobalt(III) by pyridine 2-aldoxime in various ethanol water media (20, 30, 40% v/v) have been carried out spectrophotometrically. The reaction rate is found to be <em>p</em>H-dependent in the <em>p</em>H range of 3.5 to 6.0 and compared with those of analogous system. Low <img src='/image/spc_char/delta.gif' border=0><em>H</em><sup>≠</sup> and high negative <img src='/image/spc_char/delta.gif' border=0><em>S</em><sup>≠</sup> values are indicative of a common mechanism involving outersphere association between the titled complex and the entering ligand followed by transformation of the mtersphere complex into product by an associative interchange process (I<sub>a</sub>). The effect of variation of dielectric constant of the reaction medium on the rate has en used to verify the mechanistic conclusion. |
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| Date |
2018-03-26T05:09:14Z
2018-03-26T05:09:14Z 1993-10 |
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| Type |
Article
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/44037 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJC-A Vol.32A(10) [October 1993]
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