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Influence of arene dissociation and phosphine coordination on the catalytic activity of [RuCl(κ2-triphos)(p-cymene)]PF6
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Chaplin, Adrian B. and Dyson, Paul J. (2011) Influence of arene dissociation and phosphine coordination on the catalytic activity of [RuCl(κ2-triphos)(p-cymene)]PF6. Journal of Organometallic Chemistry, Vol.696 (No.13). pp. 2485-2490. doi:10.1016/j.jorganchem.2011.02.022 ISSN 0022-328X.
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Official URL: http://dx.doi.org/10.1016/j.jorganchem.2011.02.022
Abstract
The catalytic activity of a ruthenium(II)-p-cymene complex containing a partially coordinated triphosphine ligand, [RuCl(kappa(2)-triphos)(p-cymene)]PF(6) 1, has been investigated in the hydrogenation of styrene to ethylbenzene. The influence of arene dissociation and coordination of the free phosphine donor group on the catalytic activity have been probed directly and indirectly by comparison to structural analogues. Analogues of 1 containing in a diphosphine ligand, [RuCl(kappa(2)-dppp)(p-cymene)]PF(6) 2, or a labile arene ligand, [RuCl(kappa(2)-triphos)(eta(6)-PhCO(2)Et)]PF(6) 3, show significantly enhanced catalytic activity - demonstrating the importance of ligand coordination/dissociation dynamics in ruthenium(II)-arene compounds during catalysis. These observations are supported by thermolysis reactions of 1 in DMSO. In addition, improved syntheses of 1 and 2 are reported together with the solid-state structures of syn-1, syn-3 and [Ru(eta(3)-C(8)H(13))(kappa(3)-triphos)]PF(6). (C) 2011 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Ruthenium, Catalysis, Hydrogenation, Ligands, Aromatic compounds, Phosphine, Dissociation | ||||
| Journal or Publication Title: | Journal of Organometallic Chemistry | ||||
| Publisher: | Elsevier S.A. | ||||
| ISSN: | 0022-328X | ||||
| Official Date: | 1 July 2011 | ||||
| Dates: |
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| Volume: | Vol.696 | ||||
| Number: | No.13 | ||||
| Page Range: | pp. 2485-2490 | ||||
| DOI: | 10.1016/j.jorganchem.2011.02.022 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | École polytechnique fédérale de Lausanne [Swiss Federal Institute of Technology (Lausanne, Switzerland)] (EPFL), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNF), Foundation for Research, Science & Technology (N.Z.) |
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