Problems and exercisesPhysical and Bond Properties
1. Hydrogen bonds
Explain why DMF (N,N-dimethylformamide, mass 73) boils at 153 °C and N-methylacetamide (mass 73) at 205 °C.
2. Amides are planar
Rotation about the C–N bond of an amide is strongly hindered (about 75-85 kJ/mol). Why?