i-other-than-the-rotation-about-the-c3-c4-bond-of-2-5-dimethylhexane-about-which

Question

(i) Excluding the C3−C4 bond of 2,5-dimethylhexane, about which other C−C bonds can rotation take place?

(ii) Determine the number of the C−C bonds in 2,5-dimethylhexane that have equally stable staggered conformers.

Accepted Answer

(i): C1−C2 bond, C2−C3 bond, C2−C7 bond, C4−C5 bond, C5−C6 bond, and C5−C8 bond.(ii): 4

Answer

(i): C1−C2 bond, C2−C3 bond, C2−C7 bond, C4−C5 bond, C5−C6 bond, and C5−C8 bond.(ii): 7

Answer

(i): C2−C3 bond and C4−C5 bond.(ii): 4

Answer

(i): C2−C3 bond and C4−C5 bond.(ii): 7