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O-H alcohols and phenols
3200 - 3600 cm^-1 broad and strong
O-H carboxylic acids
2500 - 3000 broad, strong
N - H amine
3300-3500 medium
N - H amide
3350 - 3500 medium
C-H alkane
2800 - 3000 variable appearance
C-H alkene
3000-3100 weak signal
C-H alkyne
abt 3300 strong signal
C-H aldehyde
2720 and 2820 strong signal
C≡N Nitrile
2210-2260 med appearance
C≡C alkyne
2100-2260 variable signal
C=O ketones/aldehydes
1680 - 1750 strong signal
C=O ester
1730-1750 strong signal
C=O carboxylic acid
1710-1780 strong signal
C=O amide
1630-1690 strong
C=C alkene
1620-1680 variable signal appearance
C=C aromatic
1450-1550 variable appearance
C-O ester, alcohol, ether
1050-1150 medium appearance
a primary amine has ___ signal(s) to left of 3000 cm-1 because…
2, bc of its symmetry causing vibrations from half of molecules and vibrations from other half