Rotation of double and triple bonds

samedi 31 mai 2014

Hi,

My textbook does not really go into the details of rotation about a bond.



I know single bonds can rotate easily.

What about double bonds and triple bonds?

The pi bonds would be broken. Does that mean new compounds are formed?



My textbook says rotation around triple bonds is easy because of circular symmetry around the electron density map and that if rotation happens, no new compounds are formed. I still do not visualize how breaking two pi bonds cannot refrain rotation and how breaking two bonds would not cause a new compound...





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