Base hydrolysis of (?? S)-(o-methoxy benzoato) (tetraethylenepentamine) cobalt(III) ion: A comparative study of the role of ion pairs and micelles

1994 ◽  
Vol 26 (7) ◽  
pp. 681-692 ◽  
Author(s):  
Achyuta N. Acharya ◽  
Anadi C. Dash
Keyword(s):  
Comparative Study ◽  
Ion Pairs ◽  
Base Hydrolysis ◽  
Hydrolysis Of

Base hydrolysis of the (+)589-cis-[Co(en)2X(glyO)]+ ions (X- = chloride(1-), bromide(1-)) and the importance of ion pairs

1979 ◽  
Vol 18 (7) ◽  
pp. 1990-1996 ◽  
Author(s):  
C. J. Boreham ◽  
D. A. Buckingham ◽  
C. R. Clark
Keyword(s):  
Ion Pairs ◽  
Base Hydrolysis ◽  
Hydrolysis Of

Base hydrolysis of anionopentaamminecobalt(III) complexes: the role of ion association and the question of a common coordinatively unsaturated intermediate

1984 ◽  
Vol 23 (16) ◽  
pp. 2473-2482 ◽  
Author(s):  
W. G. Jackson ◽  
C. N. Hookey ◽  
M. L. Randall ◽  
P. Comba ◽  
A. M. Sargeson
Keyword(s):  
Ion Association ◽  
Base Hydrolysis ◽  
Hydrolysis Of

Base hydrolysis of acidopentaaminecobalt(III) ions and the question of common intermediates. Hydrolysis of some t-[Co(tren)(NH3)X]2+/3+ ions (X = NO3-, MeSO3-, Cl-, Me2SO, N3-)

1980 ◽  
Vol 33 (2) ◽  
pp. 263 ◽  
Author(s):  
DA Buckingham ◽  
CR Clark ◽  
WS Webley
Keyword(s):  
Supporting Electrolyte ◽  
Ion Pairs ◽  
Base Hydrolysis ◽  
Rate Law ◽  
Hydrolysis Of

The preparations, and characterizations, of the complex cations t-[Co(tren)(NH3)X]2+/3+* (X = NO3-, Me2SO, H2O, Cl-, N3-) and p-[Co(tren)(NH3)X]2+/3+ (X = N3-, Cl-, H2O) are described. Base hydrolysis of t-[Co(tren)(NH3)X]2+/3+ (X = MeSO3-, Me2SO, NO3-, N3-) and of p- [Co(tren)(NH3)N3]2+ follows the rate law kobs = k[OH-] over the [OH-] range 1.0-10-4 mol dm-3 except for the 3+ ion t-[Co(tren)(NH3)Me2SO]3+ where some curvature is observed at [OH-] > 0.025 mol dm-3. The products for the t-[Co(tren)(NH3)X]2+/3+ ions (X = Cl-, NO3-, MeSO3-, Me2SO) depend on X, and on the presence or absence of supporting electrolyte (1.0 mol dm-3 NaClO4 or NaN3) varying from 12.1 % retention of the t-configuration for X = NO3- in the absence of electrolyte to c. 26% for X = Me2SO in 1.0 mol dm-3 NaN3. Significantly more retention is observed in the azido products (75-80% t-[Co(tren)(NH3)N3]2+). The results are interpreted in terms of important contributions to the mechanism from pre-formed ion pairs.

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