Kinetics and mechanism of formation of chromatopentaamminecobalt(III) ion in aqueous solution

1992 ◽  
Vol 17 (4) ◽  
pp. 317-321
Author(s):  
Novelette P. Sadler ◽  
Tara P. Dasgupta
Keyword(s):  
Aqueous Solution ◽  
Kinetics And Mechanism ◽  
Mechanism Of Formation

Kinetics and mechanism of the reaction of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione

1990 ◽  
Vol 55 (8) ◽  
pp. 1984-1990 ◽  
Author(s):  
José M. Hernando ◽  
Olimpio Montero ◽  
Carlos Blanco
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Activation Parameters ◽  
Enol Form ◽  
Kinetics And Mechanism ◽  
Kinetic Constants ◽  
Steric Factors ◽  
Kinetics Of ◽  
Mechanism Of The Reaction

The kinetics of the reactions of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione to form the corresponding monocomplexes have been studied spectrophotometrically in the range 5 °C to 16 °C at I 25 mol l-1 in aqueous solution. In the proposed mechanism for the two complexes, the enol form reacts with the metal ion by parallel acid-independent and inverse-acid paths. The kinetic constants for both pathways have been calculated at five temperatures. Activation parameters have also been calculated. The results are consistent with an associative activation for Fe(H2O)63+ and dissociative activation for Fe(H2O)5(OH)2+. The differences in the results for the complexes of heptanediones studied are interpreted in terms of steric factors.

Über den Mechanismus der Bildung von Polyanionen in wäßriger Lösung. Zum Bildungsmechanismus eines Polytetramolybdations [Mo4O144-]n / On the Mechanism of Formation of Polyanions in Aqueous Solution. Concerning the Mechanism of Formation of a Polytetramolybdate Ion [Mo4O144-]n

1976 ◽  
Vol 31 (6) ◽  
pp. 737-748 ◽  
Author(s):  
Karl-Heinz Tytko
Keyword(s):  
Aqueous Solution ◽  
Coordination Sphere ◽  
Analytical Formula ◽  
Reaction Pathways ◽  
Mechanism Of Formation ◽  
X Ray ◽  
Theoretical Considerations

Possible structures and the pertinent reaction pathways for the polymetalate ion present in a slightly soluble polymetalate having the analytical formula A2O · 2 MOs have been derived on the basis of theoretical considerations. Structure and kind of combination of the tetrameric units of one of the possibilities are in agreement with the results of X-ray structure analyses. First the previously proposed planar tetrametalate ion [M4O12(OH)4]4--is formed by stepwise aggregation according to an addition mechanism. This species undergoes a rearrangement of the coordination sphere of two of the M atoms and is then subject to a polycondensation resulting in a polytetrametalate chain, [M4O144-]n.

Chemistry of the Diazeniumdiolates. 2. Kinetics and Mechanism of Dissociation to Nitric Oxide in Aqueous Solution

2001 ◽  
Vol 123 (23) ◽  
pp. 5473-5481 ◽  
Author(s):  
Keith M. Davies ◽  
David A. Wink ◽  
Joseph E. Saavedra ◽  
Larry K. Keefer
Keyword(s):  
Nitric Oxide ◽  
Aqueous Solution ◽  
Kinetics And Mechanism

Kinetics and mechanism of the decarboxylation of anthranilic acid in aqueous solution

1968 ◽  
Vol 72 (9) ◽  
pp. 3142-3148 ◽  
Author(s):  
Alfred V. Willi ◽  
Chong Min Won ◽  
Paul Vilk
Keyword(s):  
Aqueous Solution ◽  
Anthranilic Acid ◽  
Kinetics And Mechanism
Sign in / Sign up

Export Citation Format

Share Document