538.F06.20

538.F06.20 - Principles of Organic Chemistry lecture 20,...

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Principles of Organic Chemistry lecture 20, page 1 DEMYSTIFYING THE REACTION ENERGY DIAGRAM Reactive Intermediates: This is the title of Chapter 5 in Carroll It is good define our terms relative to what we all ready know if this is possible. R P TS Reaction Coordinate 1 int 1. Decades ago when chemists ran across a mechanism that could be described by the reaction energy diagram above, they called it a no-mechanism reaction. 1.1.1. This is because a mystery state (TS) connected the two stationary states R and P. 1.1.1.1. As far as early workers in the field of organic mechanisms were concerned the reaction just happened without an explanation. 1.1.1.2. Given enough energy R transforms to P. 1.1.2. Today when we use Lewis structures to outline reaction mechanisms we still talk primarily about stationary states. 1.2. R P TS Energy Reaction Coordinate 3 int TS R P TS Reaction Coordinate 4 int TS R P TS Reaction Coordinate 2 int TS 1.2.1. Our verbiage changes when the relative energies of the at the half way point in the reaction diagram changes with respect to TS, R and P. 1.2.1.1.
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This note was uploaded on 02/21/2009 for the course CHE 118B taught by Professor Nasiri during the Winter '08 term at UC Davis.

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538.F06.20 - Principles of Organic Chemistry lecture 20,...

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