Question

In the given conformation, $C_2$ is rotated about $C_2-C_3$ bond anticlockwise by an angle of ${120}^{\circ }$, then the conformation obtained is:

• A. Fully eclipsed conformation
• B. Partially eclipsed conformation
• C. Gauche conformation
• D. Staggered conformation

Answer 1

The correct option is C Gauche conformation

When the $C_2$ carbon of anti conformer is rotated by ${120}^{\circ }$ along $C_2-C_3$ bond anticlockwise , it results into gauche conformer.