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Orgo 2 IR Spec
Infrared Spectroscopy
Term | Definition |
---|---|
C-C single bond | 1200 (Fingerprint) |
Isolated C-C double bond | 1640-1680 |
Terminal C-C triple bond | <2200 |
Conjugated C-C double bond | 1640-1640 |
Aromatic C-C double bond | ~1600 |
Internal C-C triple bond | Peak absent |
Alcohol O-H | 3300, broad |
Acid O-H | 3000, broad |
Primary Amine, -NH2 | 3300, broad, two spikes |
Secondary Amine, -NHR | 3300, broad, one spike |
Tertiary Amine, -NRR' | No N-H peak |
Ketone | 1710, strong |
Aldehyde | 1725, strong, w/ C-H peak @ 2700-2800 |
Carboxylic Acid | 1710, strong w/ broad O-H peak @ 2500-3500 |
Carboxylic Ester | ~1735, strong |
Strained Ketone | >1780, strong |
Amide | 1640-1680, strong |
Conjugated Ketone/Aldehydes/Benzoic Acid | 1680-1690, strong |
C-N single bond | ~1200 (Fingerprint) |
C-N double bond | ~1660 |
C-N triple bond | >2200 |
Fingerprint Region | 600-1400 |