Q19P - Organic Chemistry (Mcmurry)

Question

What is the difference between a transition state and an intermediate?

Step-by-Step Solution

Answer

Transition state	Intermediate
In the transition state, partial bonds are formed.	Intermediate has a complete bond.
In a reaction transition state has high energy.	Intermediate has lower energy than the transition state.
There is no specific geometry for a species at its transition state.	Intermediate has its specific geometry.
The transition state is formed in between a step in the fraction.	Intermediate is formed at the end of every step in a multistep reaction.

Step 1: Energy for transition state and intermediate

In a reaction transition state has high energy. Intermediate has lower energy than the transition state.  

Step 2: Bond formation in transition state and Intermediate

In the transition state, partial bonds are formed. Intermediate has a complete bond.

Step 3: Geometry for transition state and Intermediate

There is no specific geometry for a species at its transition state. Intermediate has its specific geometry. 

Step 4: Formation of transition state and intermediate

The transition state is formed in between a step in the fraction. Intermediate is formed at the end of every step in a multistep reaction.