(a) The hydrogenation of propene is catalysed by RhCl(PPh 3 ) 3 or HRh(CO)(PPh 3 ) 3...

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(a) The hydrogenation of propene is catalysed by RhCl(PPh3)3 or HRh(CO)(PPh3)3. Outline the mechanisms by which these reactions occur, indicating clearly what the active catalyst is in each case.

(b) HRuCl(PPh3)3 is a very active catalyst for the hydrogenation of alkenes. However, at high catalyst concentrations and in the absence of sufficient H2, orthometallation of the catalyst may accompany alkene hydrogenation. Write a reaction scheme to illustrate this process, and comment on its effect on the activity of the catalyst.

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Inorganic Chemistry

ISBN: 9781292134147

5th Edition

Authors: Catherine Housecroft

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