The reactivity of co-ordinated acetylacetone. Part I. Oxygen-18 exchange and aquation of trisacetylacetonatochromium(III)
- 1 January 1966
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1820-1822
- https://doi.org/10.1039/j19660001820
Abstract
Trisacetylacetonatochromium(III) undergoes acid-catalysed aquation to form a bisacetylacetonato-derivative, the rate of aquation showing linear dependence on the Hammett acidity function H0. Oxygen-18 exchange between solvent water and free acetylacetone proceeds rapidly in H-perchloric acid, but exchange with acetylacetone co-ordinated to chromium(III) is slow compared with aquation in solutions of the same acidity. It is inferred that “one-ended dissociation” as found in trisoxalato-complexes does not occur.Keywords
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