even-though-free-rotation-is-generally-observed-around-most-bonds-the-c-o-bond-i

Question

Even though free rotation is generally observed around most σ bonds, the C–N bond in an amide demonstrates restricted rotation, as depicted below. Which of the following factors primarily accounts for this behavior?

Diagram showing restricted rotation around the C–N bond in an amide due to energy requirements.

Accepted Answer

Partial double bond character in the C–N bond

Answer

Steric hindrance from neighboring groups

Answer

Electronegativity difference between carbon and oxygen atoms

Answer

The presence of hydrogen bonding interactions