Q7 · CSIR NET Chemistry, December 2012
Paper: CSIR NET December 2012 · Subject: Inorganic Chemistry · Chapter: Organometallic Compounds · Topic: Oxidative Addition Reductive Elimination · Marks: 2 · Difficulty: Medium
In hydrofomylation reaction using $\mathrm{[Rh(PPh_3)_2(CO)(H)]}$ as the catalyst, addition of excess $\mathrm{PPh_3}$, would
(a)increase the rate of reaction
(b)decrease the rate of reaction.
(c)not influence of the rate of reaction
(d)stop the reaction.
Answer
Answer (as printed): B
Explanation
18 electron species in excess PPh3 it becomes 20 electron species but the active catalyst is 16 electron species. So, in presence of excess PPh3 the rate of hydroformylation will be decreases.
Explanation as extracted from the printed page; notation may be imperfect.
Study loop for Organometallic Compounds