Electron transfer reaction between tris(β-diketonato)-ruthenium(II)-(III) complexes
| Autor: | Yuichi Satsu, Daisuke Fukuhara, Junsei Tamura, Kunio Shimizu, Gen P. Satô |
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| Rok vydání: | 1995 |
| Předmět: |
Tris
Trifluoromethyl chemistry.chemical_element Activation energy Photochemistry Ruthenium Gibbs free energy Inorganic Chemistry chemistry.chemical_compound Electron transfer symbols.namesake Reaction rate constant chemistry Materials Chemistry symbols Physical chemistry Physical and Theoretical Chemistry Acetonitrile |
| Zdroj: | Inorganica Chimica Acta. 236:37-42 |
| ISSN: | 0020-1693 |
| DOI: | 10.1016/0020-1693(95)04502-z |
| Popis: | The rates of electron-transfer cross-reactions of [RuIIICF{3COCH(CO)R}3] and [RuII{CF3COCH (CO)R}3]− (R = trifluoromethyl, methyl,t-butyl, furyl, thienyl, phenyl) in acetonitrile have beenmeasured spectrophotometrically at 5–30 °C by means of the stopped-flow method. The rates were of the first-order with respect to each reactant concentration; the second-order rate constants were of the order of 108 mol−1 dm3 s−1 at 25°C. The standard Gibbs energies of activation were ∼25 kJ mol−1. No correlation was found between the standard activation energy and the standard Gibbs energy of the electron-transfer reaction. The rate constant tended to decrease with increasing reactant-separation distance. |
| Databáze: | OpenAIRE |
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