The Iridium Cyle
click below to see the cyle build up step by step
|The promotor must be intervening to speed up the slower steps of the cycle.|
|The addition of iodomethane to iriduium (step 1) is about 150 times faster than addition to rhodium.|
a) Watch the cycle carefully. Is the first step still rate determining?
b) The observed overall rate law is
Rate = [catalyst] x [CO]
c) Sketch the energy profile you would expect for the first two steps of the iridium cycle.