Kinetics and Mechanism of Dissociation of (Acetylacetonato)[N-(o-carboxyphenyl)iminodiacetato]chromate(III) Ion in Acidic Media

Acid-catalyzed dissociation of (acetylacetonato) [N-(o-carboxyphenyl) iminodiacetato]chromate(III) ion has been studied kinetically in aqueous perchloric acid media over a temperature range (60–80 °C). Under these conditions the reaction occurs by two concurrent paths according to the following rate...

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Bibliographic Details
Published inBulletin of the Chemical Society of Japan Vol. 57; no. 8; pp. 2295 - 2298
Main Authors Chatterjee, Chinmay, Bali, Aya Singh
Format Journal Article
LanguageEnglish
Published Tokyo The Chemical Society of Japan 01.08.1984
Chemical Society of Japan
Subjects
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
Catalytic reaction
Chromium III Complexes
Complexes Mixed
Complexone
Organic ligand
Reaction mechanism
Chemical decomposition
Anionic complex
Kinetics
Diketone
Acidic solution
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Summary:Acid-catalyzed dissociation of (acetylacetonato) [N-(o-carboxyphenyl) iminodiacetato]chromate(III) ion has been studied kinetically in aqueous perchloric acid media over a temperature range (60–80 °C). Under these conditions the reaction occurs by two concurrent paths according to the following rate law: Rate=k1[complex]+k2[complex][H+], where k1 and k2 are the appropriate rate constants for the spontaneous and acid-catalyzed pathways, respectively Analysis of the rate data corresponding to the rate constants k1 and k2 suggests solvent assisted dissociation of the complex and its conjugate acid for the two paths, respectively, and that the opening of the chelate ring is rate determining.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.57.2295