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Kinetics and Mechanism of Oxidation of 2-(2-Methoxyethoxy)ethanol and 2-(2-Ethoxyethoxy)ethanol by Ditelluratoargentate(III) in Alkaline Medium
Corresponding Author(s) : Jinhuan Shan
Asian Journal of Chemistry,
Vol. 26 No. 14 (2014): Vol 26 Issue 14
Abstract
Oxidation of 2-(2-methoxyethoxy)ethanol and 2-(2-ethoxyethoxy)ethanol by ditelluratoargentate(III) in alkaline liquids has been studied spectrophotometrically in the temperature range of 293.2 - 313.2 K. The first-order rates with respect to reductant and Ag(III) were all found. It was found that the pseudo-first-order rate constant kobs increased with an increase in concentration of OH- and a decrease in concentration of H4TeO62-. There was a positive salt effect and no free radicals were detected. In view of this, the Ag(H3TeO6)(H2O)2 is assumed to be the active species. A plausible mechanism is proposed and the rate equations derived from the mechanism can explain all the experimental observations activation parameters and the rate constant of the rate-determining step were calculated.
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- J.H. Shan, L.P. Wang and H.W. Sun, Turk. J. Chem., 27, 265 (2003).
- J.H. Shan, Y.P. Liu and J.Y. Zhang, Chin. J. Chem., 29, 639 (2011); doi:10.1002/cjoc.201190134.
- K. Bal Reddy, Transition Metal Chem., 15, 9 (1990); doi:10.1007/BF01032221.
- W.J. Niu, Y. Zhu, K.C. Hu, C.L. Tong and H.S. Yang, Int. J. Chem. Kinet., 28, 899 (1996); doi:10.1002/(SICI)1097-4601(1996)28:12<899::AID-KIN6>3.0.CO;2-I.
- A. Kumar, P. Kumar and P. Ramamurthy, Polyhedron, 18, 773 (1999); doi:10.1016/S0277-5387(98)00352-0.
- C.V. Hiremath, T.S. Kiran and S.T. Nandibewoor, J. Mol. Catal. Chem., 248, 163 (2006); doi:10.1016/j.molcata.2005.12.018.
- J.H. Shan, S.Y. Huo, S.G. Shen and H.W. Sum, Turk. J. Chem., 30, 65 (2006).
- R.S. Shettar and S.T. Nandibewoor, J. Mol. Catal. Chem., 234, 137 (2005); doi:10.1016/j.molcata.2005.02.026.
- T. Raviprasad, B. Sethuram and R. Navaneeth, Indian J. Chem., 18A, 40 (1979).
- K.K. Sen Gupta, B.K. Nandy and S. Sen Gupta, Indian J. Chem., 36A, 190 (1997).
- J.H. Shan, L. Wang, S.G. Shen, B.S. Liu and H.W. Sun, J. Henan Univ., 21, 53 (2001).
- J.H. Shan, L. Wang, S.G. Shen, H.W. Sun and A.Z. Wang, Chem. Res. Chin. Univ., 16, 218 (2000).
- K.K. Sen Gupta and B. Ghosh, J. Chem. Res. (S), 6, 178 (1992).
- K.K.S. Gupta, A. Sanyal and S.P. Ghosh, J. Chem. Soc., Dalton Trans., 7, 1227 (1995); doi:10.1039/dt9950001227.
- F. Feigl, Spot Tests in Organic Analysis, Elsevier, New York (1966).
- J.J. Jin, Kinetics Principle of Chemical Reaction in Liquid Phase, Science Technique Press, Shanghai (1966) (in Chinese).
- J. Aveston, J. Chem. Soc. A, 273 (1969); doi:10.1039/j19690000273.
- H.G. Mukherjee, B. Mandal and S. De, Indian J. Chem., 23A, 481 (1984).
- J.H. Shan and T.Y. Liu, Acta Chim. Sin., 52, 1140 (1994).
- J.H. Shan, J.Y. Zhang, H.X. Shen and X.Q. Wang, Asian. J. Chem., 23, 701 (2011).
References
J.H. Shan, L.P. Wang and H.W. Sun, Turk. J. Chem., 27, 265 (2003).
J.H. Shan, Y.P. Liu and J.Y. Zhang, Chin. J. Chem., 29, 639 (2011); doi:10.1002/cjoc.201190134.
K. Bal Reddy, Transition Metal Chem., 15, 9 (1990); doi:10.1007/BF01032221.
W.J. Niu, Y. Zhu, K.C. Hu, C.L. Tong and H.S. Yang, Int. J. Chem. Kinet., 28, 899 (1996); doi:10.1002/(SICI)1097-4601(1996)28:12<899::AID-KIN6>3.0.CO;2-I.
A. Kumar, P. Kumar and P. Ramamurthy, Polyhedron, 18, 773 (1999); doi:10.1016/S0277-5387(98)00352-0.
C.V. Hiremath, T.S. Kiran and S.T. Nandibewoor, J. Mol. Catal. Chem., 248, 163 (2006); doi:10.1016/j.molcata.2005.12.018.
J.H. Shan, S.Y. Huo, S.G. Shen and H.W. Sum, Turk. J. Chem., 30, 65 (2006).
R.S. Shettar and S.T. Nandibewoor, J. Mol. Catal. Chem., 234, 137 (2005); doi:10.1016/j.molcata.2005.02.026.
T. Raviprasad, B. Sethuram and R. Navaneeth, Indian J. Chem., 18A, 40 (1979).
K.K. Sen Gupta, B.K. Nandy and S. Sen Gupta, Indian J. Chem., 36A, 190 (1997).
J.H. Shan, L. Wang, S.G. Shen, B.S. Liu and H.W. Sun, J. Henan Univ., 21, 53 (2001).
J.H. Shan, L. Wang, S.G. Shen, H.W. Sun and A.Z. Wang, Chem. Res. Chin. Univ., 16, 218 (2000).
K.K. Sen Gupta and B. Ghosh, J. Chem. Res. (S), 6, 178 (1992).
K.K.S. Gupta, A. Sanyal and S.P. Ghosh, J. Chem. Soc., Dalton Trans., 7, 1227 (1995); doi:10.1039/dt9950001227.
F. Feigl, Spot Tests in Organic Analysis, Elsevier, New York (1966).
J.J. Jin, Kinetics Principle of Chemical Reaction in Liquid Phase, Science Technique Press, Shanghai (1966) (in Chinese).
J. Aveston, J. Chem. Soc. A, 273 (1969); doi:10.1039/j19690000273.
H.G. Mukherjee, B. Mandal and S. De, Indian J. Chem., 23A, 481 (1984).
J.H. Shan and T.Y. Liu, Acta Chim. Sin., 52, 1140 (1994).
J.H. Shan, J.Y. Zhang, H.X. Shen and X.Q. Wang, Asian. J. Chem., 23, 701 (2011).