Further evidence for detection of short-lived transient hypomanganate(V) and manganate(VI) intermediates during oxidation of some sulfated polysaccharides by alkaline permanganate using conventional spectrophotometric techniques

Faculty Of Science

Assiut University

Further evidence for detection of short-lived transient hypomanganate(V)
and manganate(VI) intermediates during oxidation of some sulfated
polysaccharides by alkaline permanganate using conventional
spectrophotometric techniques

Research Authors
Ishaq A. Zaafarany , Abd Alla S. N. AlArifi , Ahmed Fawzy , Gamal A. Ahmed , Said. A. Ibrahim , Refat. M. Hassan , Hideo D. Takagi
Research Abstract

Spectrophotometric evidence for the formation of hypomanganate(V), [CAR-MnVO4
3], and manganate(
VI), [CAR-MnVIO4
2], intermediate complexes has been confirmed during the oxidation of iotaand
lambda-carrageenan-sulfated polysaccharides (CAR) by alkaline permanganate at pHs P12 using a
conventional spectrophotometer. These short-lived intermediate complexes were identified and characterized.
A reaction mechanism in good consistence with the experimental results is suggested.

Research Department
Department of chemistry
Research Journal
Carbohydrate Research
Research Member
Refat Moustafa Hassan Abou-Zeid
Research Publisher
ELsevier
Research Rank
1
Research Vol
Vol. 345, No.201
Research Year
2010
Research Pages
PP. 1588-1593