You should have come to the conclusion that the two cis-1,2-dimethylcyclohexanes on the previous page are indeed mirror images, and not superimposable. Now, let's try to find out whether they are interconvertible.
Below, in the center, the energy profile of the ring-flip of cis-1,2-dimethylcyclohexane is shown. The starting structure (1) and last structure (34) are also shown.
The animation below the energy profile shows the ring-flip, starting with structure 1 (axial/equatorial) and ending with structure 34 (equatorial/axial). Use the buttons to start/stop the animation.
Next, compare the two cis-1,2-dimethylcyclohexanes from the previous
On the next page,
we will take a look at the relative energies of all the different
1,2-dimethylcyclohexanes. This chapter is concluded with a short quiz.