Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Polish Journal of Chemistry

1 2000

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: penicilic acid

Sortuj według:

Ogranicz wyniki do:

Kinetics and Mechanism of Oxidative transformations of (6R)-6-(A-Phenyl-D-glycylamino)penicillanic Acid (Ampicillin) by Manganese(III) in Pyrophosphate Medium

Subrahmanyam E., Ishwar Bhat K., Sherigara B., Satyanarayana D.

Polish Journal of Chemistry

2000

Vol. 74, nr 6

793-800

Manganese(III) has been stabilized in weakly acidic solution by pyrophosphate and the compklex Formed was elucidated spectrophotoetrically. Stoichiometry of magnese (III) oxidation of apicillin in pyrophosphate medium was establishesd in the pH range 2.0-3.0 by iodometric and spectrophotometric methods.The oxidation follows first order kinetics in [Mn(III)]. The effect of varying [Mn(III)], [Amp], [H+], added [Mn(II)], total[P2O7 4-] and added[ClO-4],[SO4 2-] ions have been studied. The order in [Amp] is unity and increase in [H=] increases the rate. With increase in [Mn(II)] and [P2O4- 7], a retardation effect was noticed. Oxidation products have been proposed. Dependence of reaction rate on temperature has been studied and activation parameters were computed. A mechanism consistent with the observed results has been proposed.