Kinetics of aquation of the tris(acetylacetonate) complexes of divalent chromium, cobalt, and ruthenium. A pulse radiolytic study
The kinetics of aquation of Co(acac)/sub 3//sup -/ and Cr(acac)/sub 3//sup -/ were studied as a function of pH. The reactions leading to the loss of each of the three ligands in Co(acac)/sub 3//sup -/ were well separated from each other while in the Cr(acac)/sub 3//sup -/ complex the first step was too fast to follow with our experimental technique. The results are in agreement with a mechanism in which the bidentate-bound ligand is in equilibrium with the ligand bound only as a monodentate. These equilibrium constants are estimated. The ligand bound as monodentate is lost by an acid-catalyzed process, with an acid-independent contribution. The aquation reaction of Ru(acac)/sub 3//sup -/ is too slow to be measured by the pulse radiolytic technique. Ru(acac)/sub 3/H is a relatively strong acid. The results are compared to those obtained for the aquation reaction of Co(en)/sub 3//sup 2 +/.
- Research Organization:
- Ben-Gurion Univ., Beer-Sheva, Israel
- OSTI ID:
- 6232364
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 18:4; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400600* -- Radiation Chemistry
ACETYLACETONE
BEAMS
CHELATING AGENTS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM COMPLEXES
COBALT COMPLEXES
COMPLEXES
DATA
DATA FORMS
DECOMPOSITION
ELECTRON BEAMS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
IRRADIATION
ISOLATED VALUES
KETONES
KINETICS
LEPTON BEAMS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PARTICLE BEAMS
PULSED IRRADIATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
REACTION KINETICS
REAGENTS
RUTHENIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES
WATER