explain-why-the-c-n-absorption-of-an-amine-occurs-at-1020-cm-while-the-c-n-absor

Question

Explain why the C–N absorption of an amine occurs at 1020 cm^–1 while the C–N absorption of an amide occurs at 1400 cm^–1.

Accepted Answer

The C–N bond in an amide has a double-bond character because of resonance effect.

Answer

The carbon in an amide is more electronegative than the carbon in an amine.

Answer

The carbon in an amide is sp²-hybridized while the carbon in an amine is sp-hybridized.

Answer

The C–N bond in an amide is more polar than the C–N bond in an amine.