Article Dans Une Revue Angewandte Chemie International Edition Année : 2021

The Electron Transfer Process in Mixed Valence Compounds with a Low‐lying Energy Bridge in Different Oxidation States

Yu‐ying Yang
  • Fonction : Auteur
Xiao‐quan Zhu
  • Fonction : Auteur
Cheng‐bin Hong
  • Fonction : Auteur
Shao‐dong Su
  • Fonction : Auteur
Yue‐hong Wen
  • Fonction : Auteur
Xin‐tao Wu
  • Fonction : Auteur
Tian‐lu Sheng

Résumé

Abstract Mixed‐valence compounds with the iso‐cyanidometal‐ligand bridge in different oxidation states are used as models for the investigation of the electron‐transfer process. We synthesized a series of trimetallic isocyanidometal‐bridged compounds with [Fe–CN–Ru–NC–Fe] n + ( n =2–4), in which the one‐electron oxidation product ( N 3+ ) and two‐electron oxidation product ( N 4+ ) compounds possess an isocyanidometal bridge whose energy is, respectively lower and slightly higher than the terminal metal centers energies. For the N 3+ compounds, the bridge state (Fe II –Ru III –Fe II ) and mixed‐valence states (Fe III –Ru II –Fe II or Fe II –Ru II –Fe III ) could be simultaneously observed on the IR timescale. For the N 4+ compounds, as the donor becomes stronger the electron transfer bridge excited state (Fe III –Ru II –Fe III ) becomes more and more stable, and even becomes ground state due to the strong electronic coupling between Fe and Ru.

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hal-04841351 , version 1 (16-12-2024)

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Yu‐ying Yang, Xiao‐quan Zhu, Jean‐pierre Launay, Cheng‐bin Hong, Shao‐dong Su, et al.. The Electron Transfer Process in Mixed Valence Compounds with a Low‐lying Energy Bridge in Different Oxidation States. Angewandte Chemie International Edition, 2021, 60 (9), pp.4804-4814. ⟨10.1002/anie.202014501⟩. ⟨hal-04841351⟩
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