期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 9, 期 12, 页码 2775-2782出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.200204570
关键词
C-H activation; DFT calculations; metathesis; reaction mechanisms
Theoretical calculations on the metathesis process, [Tp(PH3)MR(eta(2)- H-CH3)]-->[Tp(PH3)M(CH3)(eta(2)-H-R)] (M=Fe, Ru, and Os: R=H and CH3), have been systematically carried out to study their detailed reaction mechanisms. Other than the one-step mechanism via a four-center transition state and the two- step mechanism through an oxidative addition/reductive elimination pathway, a new one-step mechanism, with a transition state formed under oxidative addition, has been found. Based on the intrinsic reaction coordinate calculations, we found that the trajectories of the transferring hydrogen atom in the metathesis processes studied are similar to each other regardless of the nature of reaction mechanisms.
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