Frequency range (cm-1) | Frequency (cm-1) | Group | Class of compound | |||
---|---|---|---|---|---|---|
Raw | Low level | Medium level | High level | |||
3400-2400 | 3287.76 | 3289.26 | 3288.49 | 3295.34 | O-H stretching | Carboxylic acid |
3000-2850 | 2923.59 | 2922.97 | 2923.47 | 2922.96 | C-H stretching | Alkanes |
3000-2850 | 2858.94 | 2857.57 | 2858.87 | 2857.07 | C-H stretching | Alkanes |
1750-1730 | 1742.94 | 1743.70 | 1743.17 | 1742.54 | C = O stretching | Ester |
1640-1560 | 1636.83 | 1637.42 | 1636.21 | 1638.00 | N-H bending | Primary Amines |
1550-1450 | 1535.21 | 1534.31 | 1533.57 | 1531.17 | N-H bending | Secondary Amines |
1500-1440 | 1446.72 | 1447.32 | 1444.81 | 1448.97 | C-H bending | Alkanes |
1300-1000 | 1241.04 | 1238.14 | 1239.49 | 1236.27 | C-O stretching | Ester |
1300-1000 | 1046.92 | 1046.90 | 1047.00 | 1047.51 | C-O stretching | Ester |