As a practice, try drawing the structure of axial tertiary-butylcyclohexane; the cyclohexane fragment is in the "fragment folder" and you will need to complete the structure by adding carbon atoms and then using the structure editor to add hydrogens.
Then carry out a minimisation by Molecular Mechanics MM2 and see what happens to the model. It is of course highly strained and the outcome should be that the strain is distributed between bond stretch, angle bend and torsions, as the diagram shows:
Compare your observed values of the minimised structure of axial tertiary-butylcyclohexane with those known for 2,2-dimethyl-3-methyl-butane shown below:
An University of Oxford Chemistry IT Centre Course © Copyright 1997 John Brown & Karl Harrison