Cubrilo, Jadranka and Hartenbach, Ingo and Lissner, Falk and Schleid, Thomas and Niemeyer, Mark and Winter, Rainer F. (2007) p-cymene ruthenium thioether complexes. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 692 (7). pp. 1496-1504. ISSN 0022-328X,
Full text not available from this repository. (Request a copy)Abstract
Thioethers PhC2H4SMe, PhC3H6S'Pr and MeSAllyl form substitutionally labile monomeric adducts (p-cymene)RuCl2(SRR') (2a-c) upon treatment with the {(p-cyrnene)RuCl2}(2) dimer (p-cyrnene = eta(6)-(MeC6H4Pr)-Pr-i-1,4). Pure adducts were obtained by crystallization from CH2Cl2/Et2O, and 2a,c as well as the bis(thioether) complex [(p-cymene)RuCl(SMe2)(2)](+) SbF6- (3) were studied by X-ray crystallography. The trichloro bridged diruthenium complex [(p-cymene)Ru}(2)(mu-Cl)(3)]+SbF6- is formed as a byproduct in the preparation of 3 and was also crystallographically characterized. In solution, pure samples 2a-c equilibrate with free thioether and the dimeric starting complex 1. The amount of 1 present in these mixtures increases with increasing bulk of the thioether substituents. Attempts to thermally replace the cymene ligand by the dangling arene substituent of the thioether ligand of 2a,b failed. Complexes 2a-c as well as the dimethylsufide derivative 2d were studied by cyclic voltammetry and display a close to reversible (2a,c,d) or partially reversible (2b) oxidation near +0.85 V and an irreversible reduction at rather negative potential. New peaks observed after oxidation and reduction point to dissociation of the thioether ligand as the main decomposition pathway of the associated radical cations and anions. (c) 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CLOSING OLEFIN METATHESIS; RAY CRYSTAL-STRUCTURES; DIELS-ALDER REACTIONS; TRANSFER HYDROGENATION; (ETA(6)-ETA(1)-C6H5CH2CH2PR2)RU(CH3)(2) R; ALLENYLIDENE COMPLEXES; RADICAL POLYMERIZATION; CATALYTIC-SYSTEMS; VINYL MONOMERS; ARENE; ruthenium; arene complexes; X-ray; electrochemistry; thioether |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Arbeitskreis Prof. Dr. Rainer Winter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Dec 2020 11:24 |
| Last Modified: | 21 Dec 2020 11:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33127 |
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