Kinetics and mechanism of the electron-transfer reaction between chloropenta-amminechromium(III) ion and chromium(II) in acetate medium

1968 ◽  
pp. 1098 ◽  
Author(s):  
R. D. Cannon
Keyword(s):  
Electron Transfer ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Kinetics And Mechanism ◽  
Acetate Medium

scholarly journals Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium

2015 ◽  
Vol 88 (3) ◽  
pp. 259-266 ◽  
Author(s):  
Pius O. Ukoha ◽  
Simeon Atiga ◽  
Oguejiofo T. Ujam ◽  
Jonnie N. Asegbeloyin ◽  
Obinna C. Okpareke ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Acid Medium ◽  
Perchloric Acid ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Kinetics And Mechanism ◽  
Salen Complex ◽  
Dithionite Ion

Studies on Kinetics and Mechanism of the Oxidation of Cobalt(Iii) Bound And Unbound Alpha - Hydroxy Acids By Tetramethylammonium Chlorochromate

2015 ◽  
Vol 2 (2) ◽  
pp. 64-69
Author(s):  
Dayanandhan1.R ◽  
Subramani.K
Keyword(s):  
Electron Transfer ◽  
Hydroxy Acid ◽  
Transfer Reaction ◽  
Bond Cleavage ◽  
Electron Transfer Reaction ◽  
Kinetics And Mechanism ◽  
Hydroxy Acids ◽  
Intermediate Radical ◽  
Alpha Hydroxy Acids ◽  
Kinetics Of

The kinetics of induced electron transfer reaction has been attempted presently with Tetra Methyl Ammonium Chloro Chromate (TMACC) and pentaammine cobalt (III) complexes of α-hydroxy acid in the presence of micelles. The Tetra Methyl Ammonium Chloro Chromate (TMACC) oxidizes cobalt (III) bound and unbound α-hydroxy acids. In Tetra Methyl Ammonium Chloro Chromate (TMACC) induced electron transfer in the complex, the intermediate radical formed dissociates in a nearly synchronous C-C bond cleavage and the rest of it proceeding with C-H fission yielding cobalt (III) complex. With increase in surfactant Sodium Lauryl Ethersulphate (SLES) concentration, an increase in the rate was observed.

scholarly journals Kinetics and mechanism of electron transfer to pyridinium chlorochromate (VI) from sulfur containing amino acid, L-cysteine in aqueous and micellar media

2011 ◽  
Vol 13 (2) ◽  
pp. 6-10 ◽  
Author(s):  
Sadhana Senapati ◽  
Smrutiprava Das ◽  
P. Mohanty ◽  
A. Patnaik
Keyword(s):  
Electron Transfer ◽  
Amino Acid ◽  
Transfer Reaction ◽  
Sodium Dodecyl ◽  
Electron Transfer Reaction ◽  
Kinetics And Mechanism ◽  
Pyridinium Chlorochromate ◽  
Activation Entropy ◽  
Micellar Media ◽  
Sulfur Containing

Kinetics and mechanism of electron transfer to pyridinium chlorochromate (VI) from sulfur containing amino acid, L-cysteine in aqueous and micellar media The electron transfer reaction of L-cysteine (RSH) with pyridinium chlorochromate (PCC) has been studied spectrophotometrically over the range 2.0 ≤ 103 [RSH] ≤ 6.0; 0.01 ≤ [H+] ≤ 0.2; 298 ≤ T ≤ 318 K and I = 0.3 mol dm-3 (NaClO4). The electron transfer reaction has also been carried out in the presence of anionic, cationic and neutral micelle. The reaction in acid medium is strongly catalyzed by changing [SDS]T (sodium dodecyl sulfate) up to 3 × 10-2 mol dm-3, beyond this concentration of SDS, the rate is retarded. The cationic and neutral micelle has a small effect on the rate. ΔH≠ (kJ mol-1) and ΔS≠ (JK-1 mol-1) values for the k1 and k2 paths are 30.20 ± 0.25, -159.65 ± 0.83 and 29.60 ± 0.62, -127.09 ± 2.17, respectively. The negative activation entropy is indicative of the ordered transition state for the electron transfer reaction. Formation of 2-amino-3-(2-amino-2-carboxy-ethyl) disulfanyl-propanoic acid as product is strongly supported by IR spectra.

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