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IR Spectra
Important IR spectra
12
Organic Chemistry
Undergraduate 2
09/07/2014

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Cards

Term
1700 cm-1, strong intensity
Definition
C=O
Carbonyl
Term
3300 cm-1, very broad, strong
Definition
C-O
Carboxylic acid
Term
3300 cm-1, broad, strong
Definition
O-H
Alcohol
Term
2150 cm-1, Sharp peak, weak intensity
Definition
Carbon-carbon triple bond, terminal alkyne
Term
2250 cm-1, sharp peak medium intensity
Definition
C triple bonded to nitrogen (nitrile)
Term
1650 cm-1, average width variable intensity
Definition
C=C (alkenes)
Term
1600 cm-1, average width variable intensity, up to 3 peaks
Definition
C=C, aromatic
Term
3300 cm-1, narrow, medium peak, multiples possible depending on bonds
Definition
N-H, one peak for each N-H bond
Term
3300 cm -1, narrow, strong peak
Definition
Csp3-H
Term
3050 cm-1, average width, medium intensity
Definition
Csp2-H, aromatic
Term
2900 cm-1, average width, medium to strong intensity
Definition
Csp3-H
Term
3300 cm-1, narrow, strong
Definition
Csp-H
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