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Author(s): Kallol K.Ghosh, Klshoae K Krishnanl

Email(s): Email ID Not Available

Address: School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492010 (M.P.)

Published In:   Volume - 6,      Issue - 1,     Year - 1993


Cite this article:
Ghosh and Krishnanl (1993). Kinetic solvent Deuterium effect on Hydrolysis of unsubstituted Hydroxamic Acids. Journal of Ravishankar University (Part-B: Science), 6(1), pp. 37-41.



Journal  of Rallishankai University,Vol,6.  No.8(Science)1993    pp  37-41

Kinetic solvent Deuterium effect on Hydrolysis of unsubstituted Hydroxamic Acids

Kallol K.Ghosh and Klshoae K Krishnanl

School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur-492010 (M.P.)

Ms: Received 14-8-93, Accepted 13.10.93

Abstract. The kinetic solvent isotope effects on the acid catalysed hydrolysis of three unsubstituted hydroxamic acids of the type R-C6H4.CO NHOH (R=H, 4-CH3O and 3-Cl) have been studied in D2SO4 and DCl in 10% (v/v) dimethyl sulphoxide at 550c.  The results particularly the change in the magnitude of kinetic solvent isotope effect on increasing acidityare consistent with a reaction involving a· fast pre-equilibrium followde by bimolecular deuterium oxide or water attack as a nucleophile on protonated species of hydroxamic acid.

key words: Hydroxamic Acid, Solvent Isotope   Effect, Acid-Catalysis.

NOTE: Full version of this manuscript is available in PDF.

 



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