Today was a tough one. We started out by finishing up the treatment of reactions by looking at reaction profiles (or reaction diagrams) and learning some new terminology. The big item: Know the difference between a transition state and an intermediate.
We then covered halogens, both the manufacture (which was heavy on radical chemistry) and one use of them (Grignard reactions). Along the way, we learned a few things about how lower energies for intermediates implies a lower activation energy and a better (faster) reaction, how hyperconjugation stabilizes a radical, and we re-visited allylic stabilization via resonance, but this time on an allylic radical instead of a cation or an anion.
Remember, a brief version of this lecture has been posted on iTunes as "Halides lecture."
The image is of Victor Grignard. An excellent mustache.
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