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Updated: Jul 4, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Molecular hysteresis in a rigid dinuclear ruthenium polypyridyl complex incorporating a ligand-bound ambidentate
Olof Johansson1, Reiner Lomoth
1Department of Photochemistry and Molecular Science, Uppsala University, Box 523, 751 20 Uppsala, Sweden. olof.johansson@fotomol.uu.se
Abstract:
Two alternative Ru 2 (2+/3+) mixed-valence states are formed in the first dinuclear Ru complex with a ligand-bound ambidentate motif. The hysteretic electrochemical response follows a double-square scheme where the structure of the mixed-valence state depends on the previous isovalent state. The Ru (3+) state of the pyrrolidine-substituted bisterpyridine unit is characterized by intense ligand-to-metal charge-transfer absorptions that provide a distinctive signature of the corresponding mixed-valence state.
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