Question

In the above compound, $C_2$ is rotated clockwise ${120}^{\circ }$ about $C_2-C_3$ bond. The resulting conformer is:

• A. Partially eclipsed
• B. Eclipsed
• C. Gauche
• D. Staggered

Answer 1

The correct option is C

Gauche

Here, when $C_2$ is rotated clockwise ${120}^{\circ }$ about $C_2-C_3$ bond, the resulting conformer is Gauche conformer.