Title: Mechanistic studies of olefin metathesis by ruthenium carbene complexes using electrospray ionization tandem mass spectrometry
Authors : Adlhart, Christian
Hinderling, Christian
Chen, Peter
Harold, Baumann
Published in : Journal of the American Chemical Society
Volume(Issue) : 122
Issue : 34
Pages : 8204
Pages to: 8214
Publisher / Ed. Institution : American Chemical Society
Issue Date: 2000
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 540: Chemistry
Abstract: The olefin metathesis reaction of the Grubbs ruthenium carbene complexes has been investigated in the gas phase by electrospray ionization tandem mass spectrometry. Relative rates of reaction for substituted ruthenium benzylidenes and alkylidenes after removal of one phosphine ligand were interpreted with the aid of linear free energy anal. and kinetic isotope effects. The exptl. observations are consistent with a reaction profile in which the metallacyclobutane structure is a transition state rather than an intermediate, although alternative explanations cannot be wholly ruled out. Electron withdrawal on the carbene moiety is found to accelerate the metathesis reaction when only the metathesis step itself is examd. Quantum chem. calcns. at a variety of levels were performed to check for the consistency of the interpretation.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Chemistry and Biotechnology (ICBT)
Publication type: Article in scientific Journal
ISSN: 0002-7863
URI: https://digitalcollection.zhaw.ch/handle/11475/2078
Appears in Collections:Publikationen Life Sciences und Facility Management

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