H NMR Spectroscopy

CH₃

~0.9 ppm

CH₂

~1.2—1.3 ppm

CH

~1.5—1.7 ppm

CH₃—X

~3—5 ppm

Protons adjacent to double bond

~2—3.5 ppm

Aromatic protons

6.5—8 ppm

Vinyl hydrogens

5.0—6.5 ppm

Aldehydes

9—10 ppm

Alkynes

2—3 ppm

O-H

2—5 ppm

N-H

1—3 ppm

Carboxylic acids

10—13 ppm

Enantiotopic protons

Chemically equivalent protons (one chiral carbon)

Diastereotopic protons

Nonequivalent protons (two chiral carbons)

Homotopic protons

Chemically equivalent protons (no chiral carbons)