Question

8. The order of stability of 1,4 dimethyl cyclohexane is -
(a) Trans 1,4 (e,e) > cis 1,4 (a,e) > trans 1,4 (a,a).
(b) Trans 1,4 (a,a) > trans 1,4 (e,e) > cis 1,4 (a,e).
(c) cis 1,4 (a,e) > trans 1,4 (a,a) > trans 1,4 (e,e).
(d) cis 1,3 (e,a) = trans 1,4 (a,a) = trans 1,4 (e,e).​

Answer 1

a) Trans 1,4 (e,e) > cis 1,4 (a,e) > trans 1,4 (a,a).

Answer 2

Answer:

The correct answer is option a.

Trans 1,4 (e ,e) is more stable than cis 1,4(a ,e) is more stable than trans 1,4 (a ,a)

Explanation:

• In 1,4 dimethyl cyclohexane, there are three types of conformations that are possible which are one cis and two trans.
• Trans has (e, e) and (a, a) conformation out of which e, e is more stable than that of a, a.
• The cis conformation has (a, e) interaction which is more stable than that of (a, a) interaction of trans conformation.