Steric control over the complex-formation and chelation kinetics of cis-bis(amine)palladium(II) complexes with methionine and S-methylcysteine in weakly acidic aqueous solution

1995 ◽  
pp. 2027 ◽  
Author(s):  
Surapong Suvachittanont ◽  
Rudi van Eldik
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Acidic Aqueous Solution ◽  
Kinetics Of ◽  
Steric Control

Ferricyanide Oxidation of Butanol Homogeneously Catalysed by Chlororuthenium Complexes

1979 ◽  
Vol 32 (9) ◽  
pp. 1905 ◽  
Author(s):  
AF Godfrey ◽  
JK Beattie
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Linear Dependence ◽  
Rate Constants ◽  
Homogeneous Catalyst ◽  
Basic Solution ◽  
Rate Law ◽  
Kinetics Of ◽  
Solution Estimates ◽  
Butanol Concentration

The oxidation of butan-1-ol by ferricyanide ion in alkaline aqueous solution is catalysed by solutions of ruthenium trichloride hydrate. The kinetics of the reaction has been reinvestigated and the data are consistent with the rate law -d[FeIII]/dt = [Ru](2k1k2 [BuOH] [FeIII])/(2k1 [BuOH]+k2 [FeIII]) This rate law is interpreted by a mechanism involving oxidation of butanol by the catalyst (k1) followed by reoxidation of the catalyst by ferricyanide (k2). The non-linear dependence of the rate on the butanol concentration is ascribed to the rate-determining, butanol-independent reoxidation of the catalyst, rather than to the saturation of complex formation between butanol and the catalyst as previously claimed. Absolute values of the rate constants could not be determined, because some of the ruthenium precipitates from basic solution. With K3RuCl6 as the source of a homogeneous catalyst solution, estimates were obtained at 30�0�C of k1 = 191. mol-1 s-1 and k2 = 1�4 × 103 l. mol-1 s-1.

Kinetics of complex formation between some dicarboxylic acids and iron(III) in aqueous solution

1977 ◽  
Vol 22 ◽  
pp. 61-67 ◽  
Author(s):  
G. Calvaruso ◽  
F.P. Cavasino ◽  
E.Di Dio ◽  
R. Triolo
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Dicarboxylic Acids ◽  
Kinetics Of
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