Abstract
The rates of reduction of the nickel(III) oxime-imine complexes, [Ni(III)(Me2L)]+ and [Ni(III)(Me2LH)]2+ by the corresponding iron(II) species are determined. Comparisons with rates calculated with the use of Marcus theory reveal that reactions of [Fe(III)(Me2LH)]+, where the electron transfer product is the highly acidic [Fe(III)(Me2LH)]2+, show rate enhancements of several orders of magnitude. These are ascribed to a strong coupling of the electron transfer with the concomitant, thermodynamically favorable proton transfer. A free energy correlation supports this conclusion.
Original language | English (US) |
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Pages (from-to) | 186-190 |
Number of pages | 5 |
Journal | Inorganica Chimica Acta |
Volume | 300-302 |
DOIs | |
State | Published - Apr 30 2000 |
Externally published | Yes |
Bibliographical note
Funding Information:The authors thank CAPES (Brazil) for a maintenance grant to M.C.M.L.
Keywords
- Electron transfer
- Iron complexes
- Nickel complexes
- Oxime-imine complexes
- Proton transfer