Initial state and transition state solvation effects in the cobaltitungstate oxidation of iodide in binary aqueous solvent mixtures

Autor:	Michael J. Blandamer, Philip P. Duce, John Burgess, Alexander McAuley, R. I. Haines
Rok vydání:	1982
Předmět:	chemistry.chemical_classification Aqueous solution Iodide Inorganic chemistry Metals and Alloys Solvation Gibbs free energy Inorganic Chemistry Solvent symbols.namesake chemistry.chemical_compound Reaction rate constant chemistry Materials Chemistry symbols Solubility Acetonitrile
Zdroj:	Transition Metal Chemistry. 7:10-13
ISSN:	1572-901X 0340-4285
DOI:	10.1007/bf00623798
Popis:	Rate constants are reported for 12-tungstocobaltate(III) [CoW12O40]5− oxidation of iodide in water and in binary aqueous solvent mixtures containing up to 40% methanol, 40% acetonitrile, or 60% dimethyl sulphoxide. From these kinetic results, solubility measurements on potassium 12-tungstocobaltate(III), and published data on Gibbs free energies of transfer of appropriate ions, it has been deduced that the dominant factor in determining the marked decrease in rate observed on going from water into the binary aqueous solvent mixtures is destabilisation of the transition state for the electron-transfer reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::29cbb7eea3a4e8779c8e2c5ed46bca21 https://doi.org/10.1007/bf00623798 Zobrazit plný text záznamu Full text from SpringerLink