IR Values ochem

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chem112a sp2026

Last updated 3:27 AM on 4/25/26
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17 Terms

1
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alkane

2850-3000

2
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—CH3

1375 and 1450

3
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—CH2–

1450-1475

4
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alkene

650-1000, 1600-1680, 3000-3100,

5
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alkyne

2100-2250, 3300

6
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arene

690-900, 1450 and 1600, 3030

7
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aldehyde

2720, 1630-1820

8
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alcohol

1000-1100 (sp3 C—O), 1200-1250 (sp2 C—O), 3600-3650 (phenol free), 3200-3500 (hydrogen bonded)

9
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ether

1000-1100 (sp3 C—O), 1200-1250 (sp2 C—O)

10
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ester

1000-1100 (sp3 C—O), 1200-1250 (sp2 C—O), 1735-1800

11
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carboxylic acid

1000-1100 (sp3 C—O), 1200-1250 (sp2 C—O), 1700-1725, 2500-3300 (O—H)

12
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anhydride

900-1300, 1740-1760 and 1800-1850

13
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amide

1630-1680, 3100-3550 (N—H)

14
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ketone

1630-1820

15
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acid chloride

1800

16
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amine

3100-3550 (N—H)

17
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nitrile

2200-2250 (C—N)