title: From 0 to II in One-Electron Steps: A Series of Ruthenium Complexes Supported by TropPPh2.
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 Ru(0) (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 Ru(I) 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 Ru(I) center.
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland.
authors.forename: Xiuxiu
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland. gianetti@inorg.chem.ethz.ch.
authors.forename: Thomas L
authors.initials: TL
authors.lastname: Gianetti
authors.affiliation: Center for Advanced Imaging, University of Queensland, St Lucia, Qld, 4072, Australia.
authors.forename: Joshua
authors.initials: J
authors.lastname: Harbort
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland.
authors.forename: Michael D
authors.initials: MD
authors.lastname: Wörle
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland.|Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University, 510275, Guangzhou, China.
authors.forename: Lilin
authors.initials: L
authors.lastname: Tan
authors.affiliation: Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University, 510275, Guangzhou, China.
authors.forename: Cheng-Yong
authors.initials: CY
authors.lastname: Su
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland.
authors.forename: Pascal
authors.initials: P
authors.lastname: Jurt
authors.affiliation: Center for Advanced Imaging, University of Queensland, St Lucia, Qld, 4072, Australia. jeffrey.harmer@cai.uq.edu.au.
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Harmer
authors.affiliation: Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 1, 8093, Zürich, Switzerland. hgruetzmacher@ethz.ch.|Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University, 510275, Guangzhou, China. hgruetzmacher@ethz.ch.
authors.forename: Hansjörg
authors.identifier: 0000-0002-1531-8906
authors.initials: H
authors.lastname: Grützmacher
keywords: P ligands; metal radicals; non-redox ligands; one-electron oxidation; ruthenium