FTIR Functional Group Database Table with Search
Cite This in Your Publication
FTIR Functional Group Database Table with Search - InstaNANO. https://instanano.com/all/characterization/ftir/ftir-functional-group-search/ (accessed April 30th, 2024).
FTIR Functional Group Database Table with Search - InstaNANO. https://instanano.com/all/characterization/ftir/ftir-functional-group-search/ (accessed April 30th, 2024).
Search by Peak Position (cm-1)
Search by Group
Search by Class
| Min | Max | Peak Position | Group | Class | Peak Details |
|---|---|---|---|---|---|
| 3584 | 3700 | 3584-3700 | O-H stretching | alcohol | medium, sharp |
| 3200 | 3550 | 3200-3550 | O-H stretching | alcohol | strong, broad |
| 3450 | 3550 | 3500 | N-H stretching | primary amine | medium |
| 3300 | 3400 | 3300-3400 | N-H stretching | aliphatic primary amine | medium |
| 3310 | 3350 | 3310-3350 | N-H stretching | secondary amine | medium |
| 2500 | 3300 | 2500-3300 | O-H stretching | carboxylic acid | strong, broad |
| 2700 | 3200 | 2700-3200 | O-H stretching | alcohol | weak, broad |
| 2800 | 3000 | 2800-3000 | N-H stretching | amine salt | strong, broad |
| 3267 | 3333 | 3267-3333 | C-H stretching | alkyne | strong, sharp |
| 3000 | 3100 | 3000-3100 | C-H stretching | alkene | medium |
| 2840 | 3000 | 2840-3000 | C-H stretching | alkane | medium |
| 2695 | 2830 | 2695-2830 | C-H stretching | aldehyde | medium |
| 2550 | 2600 | 2550-2600 | S-H stretching | thiol | weak |
| 2299 | 2399 | 2349 | O=C=O stretching | carbon dioxide | strong |
| 2225 | 2300 | 2250-2275 | N=C=O stretching | isocyanate | strong, broad |
| 2222 | 2260 | 2222-2260 | C≡N stretching | nitrile | weak |
| 2190 | 2260 | 2190-2260 | C≡C stretching | alkyne | weak |
| 2140 | 2175 | 2140-2175 | S-C≡N stretching | thiocyanate | strong |
| 2120 | 2160 | 2120-2160 | N=N=N stretching | azide | strong |
| 2100 | 2200 | 2150 | C=C=O stretching | ketene | |
| 2120 | 2145 | 2120-2145 | N=C=N stretching | carbodiimide | strong |
| 2100 | 2140 | 2100-2140 | C≡C stretching | alkyne | weak |
| 1990 | 2140 | 1990-2140 | N=C=S stretching | isothiocyanate | strong |
| 1900 | 2000 | 1900-2000 | C=C=C stretching | allene | medium |
| 1950 | 2050 | 2000 | C=C=N stretching | ketenimine | |
| 1650 | 2000 | 1650-2000 | C-H bending | aromatic compound | weak |
| 1768 | 1868 | 1818 | C=O stretching | anhydride | strong |
| 1785 | 1815 | 1785-1815 | C=O stretching | acid halide | strong |
| 1770 | 1800 | 1770-1800 | C=O stretching | conjugated acid halide | strong |
| 1725 | 1825 | 1775 | C=O stretching | conjugated anhydride | strong |
| 1770 | 1780 | 1770-1780 | C=O stretching | vinyl / phenyl ester | strong |
| 1710 | 1810 | 1760 | C=O stretching | carboxylic acid | strong |
| 1735 | 1750 | 1735-1750 | C=O stretchin | esters | strong |
| 1735 | 1750 | 1735-1750 | C=O stretching | δ-lactone | strong |
| 1700 | 1890 | 1745 | C=O stretching | cyclopentanone | strong |
| 1720 | 1740 | 1720-1740 | C=O stretching | aldehyde | strong |
| 1715 | 1730 | 1715-1730 | C=O stretching | α,β-unsaturated ester | strong |
| 1705 | 1725 | 1705-1725 | C=O stretching | aliphatic ketone | strong |
| 1706 | 1720 | 1706-1720 | C=O stretching | carboxylic acid | strong |
| 1680 | 1710 | 1680-1710 | C=O stretching | conjugated acid | strong |
| 1685 | 1710 | 1685-1710 | C=O stretching | conjugated aldehyde | strong |
| 1640 | 1740 | 1690 | C=O stretching | primary amide | strong |
| 1640 | 1690 | 1640-1690 | C=N stretching | imine / oxime | strong |
| 1666 | 1685 | 1666-1685 | C=O stretching | conjugated ketone | strong |
| 1630 | 1730 | 1680 | C=O stretching | secondary amide | strong |
| 1630 | 1730 | 1680 | C=O stretching | tertiary amide | strong |
| 1600 | 1700 | 1650 | C=O stretching | δ-lactam | strong |
| 1668 | 1678 | 1668-1678 | C=C stretching | alkene | weak |
| 1665 | 1675 | 1665-1675 | C=C stretching | alkene | weak |
| 1665 | 1675 | 1665-1675 | C=C stretching | alkene | weak |
| 1626 | 1662 | 1626-1662 | C=C stretching | alkene | medium |
| 1648 | 1658 | 1648-1658 | C=C stretching | alkene | medium |
| 1600 | 1650 | 1600-1650 | C=C stretching | conjugated alkene | medium |
| 1580 | 1650 | 1580-1650 | N-H bending | amine | medium |
| 1566 | 1650 | 1566-1650 | C=C stretching | cyclic alkene | medium |
| 1638 | 1648 | 1638-1648 | C=C stretching | alkene | strong |
| 1610 | 1620 | 1610-1620 | C=C stretching | α,β-unsaturated ketone | strong |
| 1500 | 1550 | 1500-1550 | N-O stretching | nitro compound | strong |
| 1435 | 1485 | 1465 | C-H bending | alkane | medium |
| 1400 | 1500 | 1450 | C-H bending | alkane | medium |
| 1380 | 1390 | 1380-1390 | C-H bending | aldehyde | medium |
| 1380-1385 | C-H bending | alkane | medium | ||
| 1395 | 1440 | 1395-1440 | O-H bending | carboxylic acid | medium |
| 1330 | 1420 | 1330-1420 | O-H bending | alcohol | medium |
| 1380 | 1415 | 1380-1415 | S=O stretching | sulfate | strong |
| 1380 | 1410 | 1380-1410 | S=O stretching | sulfonyl chloride | strong |
| 1000 | 1400 | 1000-1400 | C-F stretching | fluoro compound | strong |
| 1310 | 1390 | 1310-1390 | O-H bending | phenol | medium |
| 1335 | 1372 | 1335-1372 | S=O stretching | sulfonate | strong |
| 1335 | 1370 | 1335-1370 | S=O stretching | sulfonamide | strong |
| 1342 | 1350 | 1342-1350 | S=O stretching | sulfonic acid | strong |
| 1300 | 1350 | 1300-1350 | S=O stretching | sulfone | strong |
| 1266 | 1342 | 1266-1342 | C-N stretching | aromatic amine | strong |
| 1250 | 1310 | 1250-1310 | C-O stretching | aromatic ester | strong |
| 1200 | 1275 | 1200-1275 | C-O stretching | alkyl aryl ether | strong |
| 1020 | 1250 | 1020-1250 | C-N stretching | amine | medium |
| 1200 | 1225 | 1200-1225 | C-O stretching | vinyl ether | strong |
| 1163 | 1210 | 1163-1210 | C-O stretching | ester | strong |
| 1124 | 1205 | 1124-1205 | C-O stretching | tertiary alcohol | strong |
| 1085 | 1150 | 1085-1150 | C-O stretching | aliphatic ether | strong |
| 1087 | 1124 | 1087-1124 | C-O stretching | secondary alcohol | strong |
| 1050 | 1085 | 1050-1085 | C-O stretching | primary alcohol | strong |
| 1030 | 1070 | 1030-1070 | S=O stretching | sulfoxide | strong |
| 1040 | 1050 | 1040-1050 | CO-O-CO stretching | anhydride | strong, broad |
| 985 | 995 | 985-995 | C=C bending | alene | strong |
| 960 | 980 | 960-980 | C=C bending | alkene | strong |
| 885 | 895 | 885-895 | C=C bending | alkene | strong |
| 550 | 850 | 550-850 | C-Cl stretching | halo compound | strong |
| 790 | 840 | 790-840 | C=C bending | alkene | medium |
| 665 | 730 | 665-730 | C=C bending | aklene | strong |
| 515 | 690 | 515-690 | C-Br stretching | halo compound | strong |
| 500 | 600 | 500-600 | C-I stretching | halo compound | strong |
| 860 | 900 | 860-900 | C-H bending | 1,2,4-trisubstituted | strong |
| 860 | 900 | 860-900 | C-H bending | 1,3-disubstituted | strong |
| 790 | 830 | 790-830 | C-H bending | 1,4-disubstituted | strong |
| 790 | 830 | 790-830 | C-H bending | 1,2,3,4-tetrasubstituted | strong |
| 760 | 800 | 760-800 | C-H bending | 1,2,3-trisubstituted | strong |
| 735 | 775 | 735-775 | C-H bending | 1,2-disubstituted | strong |
| 730 | 770 | 730-770 | C-H bending | monosubstituted | strong |
| 680 | 720 | 680-720 | benzene derivative |
Yes