scholarly journals Kinetics and Mechanism of the Oxidation Reaction of Bis(μ-dibutyldithiocarbamato-S,S′)-digold(I) by Halogens

1978 ◽  
Vol 51 (12) ◽  
pp. 3530-3533 ◽  
Author(s):  
Hidetoshi Kita ◽  
Kazuyuki Itoh ◽  
Koji Tanaka ◽  
Toshio Tanaka
Keyword(s):  
Oxidation Reaction ◽  
Kinetics And Mechanism

scholarly journals Research on the Oxidation of Adrenaline——Kinetics and Mechanism of the Oxidation Reaction and the Radical Intermidate

1991 ◽  
Vol 7 (03) ◽  
pp. 260-269
Author(s):  
Dai Jian-Bo ◽  
◽  
Bai Ling-Jun ◽  
Zhang Yi-Bao ◽  
Zang Ya-Ru ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Kinetics And Mechanism

The Oxidation Reaction of Tl(I) to Tl(III) by the Peroxodisulfate Ion. I. Kinetics and Mechanism in an Aqueous Solution

1980 ◽  
Vol 53 (5) ◽  
pp. 1271-1277 ◽  
Author(s):  
Masaru Kimura ◽  
Tsuneko Akazome ◽  
Kayo Takenaka ◽  
Akiko Kobayashi
Keyword(s):  
Aqueous Solution ◽  
Oxidation Reaction ◽  
Kinetics And Mechanism

scholarly journals Kinetics and mechanism of the oxidation of disaccharides by CrVI

2002 ◽  
Vol 80 (12) ◽  
pp. 1676-1686 ◽  
Author(s):  
Viviana Roldán ◽  
Juan Carlos González ◽  
Mabel Santoro ◽  
Silvia García ◽  
Nieves Casado ◽  
...  
Keyword(s):  
Acid Medium ◽  
Oxidation Reaction ◽  
Kinetic Constant ◽  
Bidentate Ligand ◽  
Second Order ◽  
Kinetics And Mechanism ◽  
Relative Reactivity ◽  
Epr Spectra ◽  
Order Kinetic ◽  
Rate Law

The oxidation of D-lactose, D-maltose, D-melibiose, and D-cellobiose by CrVI yields the corresponding aldobionic acid and Cr3+ as final products when an excess of reducing disaccharide over CrVI is used. The rate law for the CrVI oxidation reaction is expressed by –d[CrVI]/dt = kH [disaccharide][CrVI], where the second-order kinetic constant, kH, depends on [H+]. The relative reactivity of the disaccharides with CrVI is expressed as follows: Mel > Lac > Cel > Mal, at 33°C. In acid medium, intermediate CrV forms and reacts with the substrate faster than CrVI. The EPR spectra show that five- and six-coordinate oxo-CrV intermediates are formed, with the disaccharide acting as bidentate ligand. Five-coordinate oxo-CrV species are present at any [H+], whereas six-coordinate ones are observed only at pH < 2, where they rapidly decompose to the redox products. In the pH 3–7 range, where hexa-coordinate oxo-CrV species are not observed, CrV complexes are stable enough to remain in solution from several days to several months.Key words: chromium, saccharides, kinetics, EPR.

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