1,2-ditert-butylcyclohexane is an interesting case of a conformational study. The cis isomer is more stable than the trans isomer, although the trans isomer presents a conformer with both substituents in equatorial positions. In order to analyze this fact: a. Draw the conformational equilibrium of both compounds. Explain using and drawing the structures why this difference happens (the one described above).

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1,2-ditert-butylcyclohexane is an interesting case of a conformational study. The cis isomer is more stable than the trans isomer, although the trans isomer presents a conformer with both substituents in equatorial positions. In order to analyze this fact:

a. Draw the conformational equilibrium of both compounds. Explain using and drawing the structures why this difference happens (the one described above).

b. In the trans isomer, the di-axial conformation is 25.9 kJ / mol more stable than the di-equatorial. Calculate the energy of the di-equatorial conformation.

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