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Updated: Jul 16, 2026
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Nonadiabatic, short-range, intramolecular electron transfer from ruthenium(II) to cobalt(III) complexes
1Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
Abstract:
The activation parameters reported for intramolecular electron-transfer between ruthenium(II) and cobalt(III) complexes have been corrected for the thermodynamic contributions of the entropy change for the reaction DeltaS0 to the entropy of activation DeltaS*, and it is concluded that these electron-transfers range from adiabatic (pyrazine bridge) to highly nonadiabatic. The electronic factors are about 20 times smaller than for diruthenium mixed-valence complexes. Spanning the metal-metal separation range of 7-14 A over which beta=0.7 A-1, the electron-transfer rates are dominated by the electronic factors, which change three times more with separation than do the nuclear factors.
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