CHEM 2311- Unit 1 IRS thresholds

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10 Terms

1
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Carbonyl group

strong, sharp signal at ~1700 cm^-1

2
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OH group w/o carbonyl

broad signal at ~3400 cm^-1

3
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OH group of carboxylic acid

very broad signal around ~2200-3600 cm^-1

4
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sp² C-H bond

just above 3000 cm^-1

5
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sp³ C-H bond

just below 3000 cm^-1

6
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sp C-H bond

right at 3000 cm^-1

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triple bond

strong signal at ~2200 cm^-1

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amines

sharp peaks around 3300-3500 cm^-1

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primary amine

2 peaks

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secondary amine

1 peak