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Updated: Feb 19, 2026
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Macrocyclic Triruthenium Complexes Having Electronically Coupled Mixed-Valent States
Daniel Fink1, Michael Bodensteiner2, Michael Linseis1
1Fachbereich Chemie, Universität Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany.
Abstract:
5-Ethynyl-2-furancarboxylic acid and 3-ethynylbenzoic acid self-assemble with [HRu(CO)Cl(PiPr3 )2 ] to form macrocyclic C3 -symmetric triangular triruthenium alkenyl complexes [{Ru(CO)(PiPr3 )2 (CH=CHArCOO)}3 ] (Ar=C6 H4 : 1-B, Ar=C4 H2 O: 1-F), which were characterized by multinuclear NMR spectroscopy, high-resolution ESI mass spectrometry, and, in the case of 1-B, by X-ray crystallography. Electrochemical studies indicate that the macrocycles are oxidized in three consecutive one-electron steps. The mixed-valent states obtained by electrochemical or chemical oxidation show signs of valence delocalization, which makes these complexes rare examples of molecule-based conductive loops with through-bond charge delocalization.
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