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

كلية العلوم

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
Ahmad Fawzy Saad Sayed
Research Publisher
ELsevier
Research Rank
1
Research Vol
Vol. 345, No.201
Research Year
2010
Research Pages
PP. 1588-1593