INOR 11 |
| In mixed-valence complexes electron transfer between the metal centers can be induced thermally or photochemically. Evaluation of the intensity of the coupling between the metal centers can be achieved by the determination of the free energy of comproportionation, ΔGc, which corresponds to the equilibrium of comproportination. Usually, the magnitude of ΔGc can be adequately described by four factors: ΔGs, ΔGe, ΔGi, and ΔGr which represent the statistical distribution, the electrostatic repulsion, the inductive factor and the free energy of resonance exchange. In particular examples, it has also been shown that additional terms to represent the ion pairing energy or the antiferromagnetic interaction must be included. We report here that magnetic exchange interaction plays a key role in mixed-valence systems with a carbon rich bridge between the remote metal ends. |
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Frontiers in Organometallic Chemistry
8:25 AM-12:00 PM, Sunday, August 19, 2007 BCEC -- 206 A/B, Oral
Division of Inorganic Chemistry |