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The overall reaction for a generic substitution reaction in a metal complex is MLnX + Y...

The overall reaction for a generic substitution reaction in a metal complex is MLnX + Y --> MLnY + X.

a. Write the mechanism steps for a dissociatively activated dissociative substitution mechanism. (Dd) in a metal complex, and label the rate determining step.

b. Write the rate law for this mechanism.

c. If the entering group (Y) was changed to a bulkier ligand (ie. PEt3 to PPh3) what effect would you expect on the rate, based on your rate law. Explain.

d. Draw a reaction coordinate diagram for the same mechanism and label the products, reactants, intermediate, and activation energy.

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