From 0 to II in One‐Electron Steps: A Series of Ruthenium Complexes Supported by TropPPh2 |
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| Authors: | Xiuxiu Yang Dr. Thomas L. Gianetti Joshua Harbort Dr. Michael D. Wörle Dr. Lilin Tan Prof. Dr. Cheng‐Yong Su Pascal Jurt Assoc. Prof. Jeffrey R. Harmer Prof. Dr. Hansjörg Grützmacher |
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| Affiliation: | 1. Department of Chemistry and Applied Biosciences, Zürich, Switzerland;2. Center for Advanced Imaging, University of Queensland, St Lucia, Qld, Australia;3. Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University, Guangzhou, China |
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| Abstract: | We report the synthesis of a series of ruthenium complexes supported by the phosphine olefin ligand tropPPh2 (trop=5‐H‐dibenzo‐[a,d]cyclohepten‐5‐yl) in the oxidation states 0, +I, and +II, formed via successive one‐electron oxidization steps from Ru0(tropPPh2)2. The bidentate character of the tropPPh2 ligand and its steric hindrance force the complexes to adopt uncommon geometries, which were investigated by X‐ray diffraction analysis. EPR data of the mononuclear RuI complex reveal couplings of the unpaired spin with the ruthenium and two phosphorus nuclei, as well as the olefinic protons which show that the spin is mainly localized on the RuI center. |
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| Keywords: | metal radicals non-redox ligands one-electron oxidation P ligands ruthenium |
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