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1. Two Rh(I)-phosphine catalysts for olefin hydrogenation, Wilkinson's catalyst and a Schrock-Osborn catalyst, are shown below. They are known to operate by different mechanisms. PF6 Ph;P., RhPPha 'PPH3 Ph2 „P Rh Ph2 Wilkinson Schrock-Osborn 5-hexene-2-one (a) For each catalyst, give the mechanism for hydrogenation of 5-hexene-2-one. Please name each elementary step (e.g. oxidative addition, migratory insertion, dissociation, etc.).

1. Two Rh(I)-phosphine catalysts for olefin hydrogenation, Wilkinson's catalyst and a Schrock-Osborn catalyst, are shown below. They are known to operate by different mechanisms. PF6 Ph;P., RhPPha 'PPH3 Ph2 „P Rh Ph2 Wilkinson Schrock-Osborn 5-hexene-2-one (a) For each catalyst, give the mechanism for hydrogenation of 5-hexene-2-one. Please name each elementary step (e.g. oxidative addition, migratory insertion, dissociation, etc.).

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Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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1. Two Rh(I)-phosphine catalysts for olefin hydrogenation, Wilkinson's catalyst and a Schrock-Osborn catalyst, are shown below. They are known to operate by different mechanisms. PF6 Ph;P., RhPPha 'PPH3 Ph2 „P Rh Ph2 Wilkinson Schrock-Osborn 5-hexene-2-one (a) For each catalyst, give the mechanism for hydrogenation of 5-hexene-2-one. Please name each elementary step (e.g. oxidative addition, migratory insertion, dissociation, etc.). (b) Discuss several factors that contribute to the catalysts operating by different mechanisms.
Transcribed Image Text:1. Two Rh(I)-phosphine catalysts for olefin hydrogenation, Wilkinson's catalyst and a Schrock-Osborn catalyst, are shown below. They are known to operate by different mechanisms. PF6 Ph;P., RhPPha 'PPH3 Ph2 „P Rh Ph2 Wilkinson Schrock-Osborn 5-hexene-2-one (a) For each catalyst, give the mechanism for hydrogenation of 5-hexene-2-one. Please name each elementary step (e.g. oxidative addition, migratory insertion, dissociation, etc.). (b) Discuss several factors that contribute to the catalysts operating by different mechanisms.
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