(Solved): (a) What is a proper name of the following compound? Trans-1-chloro-4-methylcyclohexane (No R/S sh ...

(a) What is a proper name of the following compound? Trans-1-chloro-4-methylcyclohexane (No R/S should be used because it is not a chiral molecule without any chiral center) (b) Draw two chair conformations (related by chair flip) for the compound in part a. Page \( \mid 7 \) (c) Count up all 1,3-diaxial interactions (other than between hydrogen atoms) for each of your chairs and sum them to give the conformational energy. How much energy it costs to flip between these two conformations? (Note: each \( \mathrm{CH}_{3} / \mathrm{H} \) interaction is about \( 4 \mathrm{~kJ} / \mathrm{mol} \), each \( \mathrm{Cl} / \mathrm{H} \) is about \( 1 \mathrm{~kJ} / \mathrm{mol} \), and each \( \mathrm{CH}_{3} / \mathrm{Cl} \) is about \( 2.5 \mathrm{~kJ} / \mathrm{mol} \) ). Energy of chair flip: (d) Based upon your numbers in part c, circle or label which chair conformation is preferred in part b. (e) In the following chair conformation of a bicyclic alkane, draw out the hydrogen atoms on carbons labeled as "1" and "2" to reflect their axial/equatorial configuration.