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| Frequency (cm−1) | Assignment | |
|---|---|---|
| Region I | 3100–3600 | ν(OH) |
| Region II | 2800–3100 | ν(CH), νas(CH2), νs(CH2) |
| Region III | 1200–1500 | df(CH/CH2) |
| Region IV | 800–1200 | ν(C–O), ν(C–C) |
| Region V | 100–800 | df(CCO) |
ν: stretching (s: symmetric, as: asymmetric), b: bending, sc: scissoring, t: twisting, df: deformation.
