Question

Which of the following amines exhibits maximum degree of intermolecular hydrogen bonding?

Options

• Propan-1-amine

• N-Ethylethanamine

• N, N-Diethylethanamine

• N, N-Dimethylaniline

Answer 1

Propan-1-amine

Explanation:

Because primary amines contain two hydrogen atoms linked to nitrogen for hydrogen bond formation, the extent of intermolecular hydrogen bonding is greater in propan-1-amine (1°) than in N-ethylethanamine (2°). The absence of H-atom linked to nitrogen prevents intermolecular hydrogen bonding in N, N-Diethylethanamine (3°) and N, N-Dimethylaniline (3°).