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From 0 to II in One‐Electron Steps: A Series of Ruthenium Complexes Supported by TropPPh 2
Author(s) -
Yang Xiuxiu,
Gianetti Thomas L.,
Harbort Joshua,
Wörle Michael D.,
Tan Lilin,
Su ChengYong,
Jurt Pascal,
Harmer Jeffrey R.,
Grützmacher Hansjörg
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201605687
Subject(s) - ruthenium , chemistry , phosphine , steric effects , ligand (biochemistry) , unpaired electron , electron paramagnetic resonance , denticity , olefin fiber , crystallography , photochemistry , stereochemistry , molecule , crystal structure , organic chemistry , nuclear magnetic resonance , catalysis , biochemistry , physics , receptor
We report the synthesis of a series of ruthenium complexes supported by the phosphine olefin ligand tropPPh 2 (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 (tropPPh 2 ) 2 . The bidentate character of the tropPPh 2 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.