Sage Journals: Discover world-class research

Abstract

The kinetics and mechanism of Cr^VI oxidation of D-glucose in the presence and absence of 1,10-phenanthroline (phen) in aqueous acid media have been studied under the conditions, [sugar]_T ≥ [Cr^VI]_T at different temperatures. The monomeric species of Cr^VI has been found to be kinetically active in the absence of phen whereas in the phen-catalysed path, the Cr^VI - phen complexes have been found to be the active oxidants. Both the paths show a first order dependence on [sugar]_T and [Cr^VI]_T. The uncatalysed path shows a second order dependence on [H⁺], while the catalysed path shows a first order dependence on [H⁺]. The phen-catalysed path is first-order in [phen]_T. These observations remain unaltered in the presence of externally added surfactants. CPC inhibits both pathways while SDS catalyses the reactions.

Keywords

kinetics catalysis D-glucose chromium(VI)1,10-phenanthroline surfactants

References

Das

A. K.

, Coord. Chem. Rev., 2004, 48, 81 and references cited therein.

cf. (a) Virtanen

P. O. I.

, and Lindroos-Heinanen

, Acta Chem. Scand. Ser., 1988, B42, 411; (b) M. Gupta, S. K. Saha and P. Banerjee, J. Chem. Soc. Perkin Trans. 2., 1988, 1781.

(a) Katz

S. A.

, and Salem

, The Biological and Environmental Chemistry of Chromium. VCH, New York, 1994, pp. 65–119; (b) M. Mitewa and P. R. Bontchev, Coord. Chem. Rev., 1985, 61, 241; (c) M. Cieslak-Golonka, Polyhedron, 1995, 15, 3667.

(a) Sengupta

K. K.

, and Basu

S. N.

, Carbohydr. Res., 1980, 80, 223; (b) K. K. Sengupta, S. Sengupta and S. N. Basu, Carbohydr. Res., 1979, 71, 75; (c) K. K. Sengupta, S. Sengupta and S. N. Basu, Carbohydr. Res., 1979, 72, 139; (d) L. F. Sala, S. R. Signorella, M. Rizzotto, M. I. Frascaroli and F. Gandolfo, Can. J. Chem., 1992, 70, 2046; (e) M. Rizzotto, M. I. Frascaroli, S. Signorella and L. F. Sala, Polyhedron, 1996, 15, 1517.

(a) Das

A. K.

, Roy

, Saha

, Mohanty

R. K.

, and Das

, J. Phys. Org. Chem., 2001, 14, 333; (b) B. Saha, M. Das, R. K. Mohanty and A. K. Das, J. Chinese Chem. Soc., 2004, 51, 399; (c) A. K. Das, S. K. Mondal, D. Kar and M. Das, Inorg. React. Mech., 2001, 3, 63.

(a) Peng

T. Y.

, and Rocek

, J. Am. Chem. Soc., 1997, 99, 7622; (b) C. Srinivasan, S. Rajagopal and A. Chellamani, J. Chem. Soc. Perkin. Trans 2., 1990, 1839; (c) T. Y. Lin, J. Chinese Chem. Soc., 1981, 28, 149; (d) T. Y. Lin, Y. L. Mao and C. M. Chuo, J. Chinese Chem. Soc., 1991, 38, 167.

Das

A. K.

, Roy

, and Saha

, Transition. Met. Chem., 2001, 26, 630.

(a) Saha

, Das

, and Das

A. K.

, J. Chem. Res. (S)., 2003, 658; (b) B. Saha, M. Islam and A. K. Das, Inorg. React. Mech., (In Press); (d) B. Saha, M. Islam and A. K. Das, J. Chem. Res. (S)., 2005, 471; (e) B. Saha, M. Islam and A. K. Das, Prog. React. Kinet. Mech., 2005, 30, 145; (f) M. Islam, B. Saha and A. K. Das, Int. J. Chem. Kinet., 2006, 38, 531.

Buchanan

J. G.

, Dekker

C. A.

, and Long

A. G.

, J. Chem. Soc., 1950, 3162.

10.

Travelyan

W. E.

, Procter

D. P.

, and Harrison

J. S.

, Nature, 1950, 166, 444.

11.

Hough

, Jones

J. K. N.

, and Wadman

W. H.

, J. Chem. Soc., 1950, 1702.

12.

(a) Lin

T. Y.

, Zeng

H. W.

, and Chuo

C. M.

, J. Chinese Chem. Soc., 1995, 42, 43; (b) Z. Khan and Kabir-ud-Din, Transition. Met. Chem., 2002. 27, 832.

13.

Bunton

C. A.

, and Cerichelli

, Int. J. Chem. Kinet., 1980, 12, 519.

14.

Panigrahi

G. P.

, and Sahu

B. P.

, J. Indian Chem. Soc., 1991, 68, 239.

15.

Sarada

N. C.

, and Reddy

I. A. K.

, J. Indian Chem. Soc., 1993, 70, 35.

Kinetics and Mechanism of 1,10-Phenanthroline Catalysed Chromium(VI) Oxidation of D-Glucose in Aqueous Micellar Media

Abstract

Keywords

References