Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex
The formation of ternary intermediate unstable complex during the oxidation of aromatic amines by periodate ion catalysed by MnII has been proposed in case of some anilines. This paper is the first report on stopped-flow kinetic study and evaluation of stability constant of ternary complex forming i...
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| Format: | Article |
| Language: | English |
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Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)
2015-04-01
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| Series: | Bulletin of Chemical Reaction Engineering & Catalysis |
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| Online Access: | https://journal.bcrec.id/index.php/bcrec/article/view/19388 |
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| author | Rajneesh D. Kaushik Richa Agarwal Priyanka Tyagi Om Singh Jaspal Singh |
| author_facet | Rajneesh D. Kaushik Richa Agarwal Priyanka Tyagi Om Singh Jaspal Singh |
| author_sort | Rajneesh D. Kaushik |
| collection | DOAJ |
| description | The formation of ternary intermediate unstable complex during the oxidation of aromatic amines by periodate ion catalysed by MnII has been proposed in case of some anilines. This paper is the first report on stopped-flow kinetic study and evaluation of stability constant of ternary complex forming in the MnII - catalysed periodate oxidation of 2, 3-dimethylaniline (D) in acetone-water medium. Stop-flow spectrophotometric method was used to study the ternary complex formation and to determine its stability constant. The stop-flow trace shows the reaction to occur in two steps. The first step, which is presumably the formation of ternary complex, is relatively fast while the second stage is relatively quite slow. The stability constant evaluated for D - MnII - IO4- ternary complex by determining equilibrium absorbance is (2.2 ± 1.0) × 105. Kinetics of ternary complex formation was defined by the rate law(A) under pseudo first order conditions.
ln{[C2]eq / ( [C2]eq -[C2])} = kobs . t (A)
where, kobs is the pseudo first order rate constant, [C2] is concentration of ternary complex at given time t, and [C2]eq is the equilibrium concentration of ternary complex. |
| first_indexed | 2024-03-11T22:50:18Z |
| format | Article |
| id | doaj.art-fe4213394c45486db9a9a35e232ffe47 |
| institution | Directory Open Access Journal |
| issn | 1978-2993 |
| language | English |
| last_indexed | 2024-03-11T22:50:18Z |
| publishDate | 2015-04-01 |
| publisher | Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS) |
| record_format | Article |
| series | Bulletin of Chemical Reaction Engineering & Catalysis |
| spelling | doaj.art-fe4213394c45486db9a9a35e232ffe472023-09-22T03:52:50ZengMasyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)Bulletin of Chemical Reaction Engineering & Catalysis1978-29932015-04-01101788710.9767/bcrec.10.1.7621.78-878104Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate ComplexRajneesh D. Kaushik0Richa Agarwal1Priyanka Tyagi2Om Singh3Jaspal Singh4Department of Chemistry, Gurukul Kangri University, Haridwar-249404, IndiaDepartment of Chemistry, Gurukul Kangri University, Haridwar-249404, IndiaDepartment of Chemistry, Gurukul Kangri University, Haridwar-249404, IndiaDepartment of Chemistry, Gurukul Kangri University, Haridwar-249404, IndiaDepartment of Chemistry, Gurukul Kangri University, Haridwar-249404, IndiaThe formation of ternary intermediate unstable complex during the oxidation of aromatic amines by periodate ion catalysed by MnII has been proposed in case of some anilines. This paper is the first report on stopped-flow kinetic study and evaluation of stability constant of ternary complex forming in the MnII - catalysed periodate oxidation of 2, 3-dimethylaniline (D) in acetone-water medium. Stop-flow spectrophotometric method was used to study the ternary complex formation and to determine its stability constant. The stop-flow trace shows the reaction to occur in two steps. The first step, which is presumably the formation of ternary complex, is relatively fast while the second stage is relatively quite slow. The stability constant evaluated for D - MnII - IO4- ternary complex by determining equilibrium absorbance is (2.2 ± 1.0) × 105. Kinetics of ternary complex formation was defined by the rate law(A) under pseudo first order conditions. ln{[C2]eq / ( [C2]eq -[C2])} = kobs . t (A) where, kobs is the pseudo first order rate constant, [C2] is concentration of ternary complex at given time t, and [C2]eq is the equilibrium concentration of ternary complex.https://journal.bcrec.id/index.php/bcrec/article/view/19388stopped flow kineticsstability constantternary complexmnii catalysedperiodate oxidation2, 3- dimethylaniline |
| spellingShingle | Rajneesh D. Kaushik Richa Agarwal Priyanka Tyagi Om Singh Jaspal Singh Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex Bulletin of Chemical Reaction Engineering & Catalysis stopped flow kinetics stability constant ternary complex mnii catalysed periodate oxidation 2, 3- dimethylaniline |
| title | Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex |
| title_full | Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex |
| title_fullStr | Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex |
| title_full_unstemmed | Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex |
| title_short | Stopped Flow Kinetics of MnII Catalysed Periodate Oxidation of 2, 3- dimethylaniline - Evaluation of Stability Constant of the Ternary Intermediate Complex |
| title_sort | stopped flow kinetics of mnii catalysed periodate oxidation of 2 3 dimethylaniline evaluation of stability constant of the ternary intermediate complex |
| topic | stopped flow kinetics stability constant ternary complex mnii catalysed periodate oxidation 2, 3- dimethylaniline |
| url | https://journal.bcrec.id/index.php/bcrec/article/view/19388 |
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