This means that the ratio of the chair structures where CH 3 is equatorial and axial, respectively, is 19:1 (in other words, favoring the CH 3 group in the equatorial position). In the case of the hyd...This means that the ratio of the chair structures where CH 3 is equatorial and axial, respectively, is 19:1 (in other words, favoring the CH 3 group in the equatorial position). In the case of the hydrocarbons (Me, Et, iPr, tBu), we see that there is a slight increase in energy as one proceeds from Me to Et to iPr, but then there is a big jump in A-value for tBu.
