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IR signal Frequencies - CHEM3411 B

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<p>What functional group has this strong, broad signal at ~3400-3300cm-1?</p>

What functional group has this strong, broad signal at ~3400-3300cm-1?

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Chemistry

Organic Chemistry

Important signals listed in Dr. B's summary sheet and in the table from p.169 of the textbook

44 Terms

1

<p>What functional group has this strong, broad signal at ~3400-3300cm-1?</p>

What functional group has this strong, broad signal at ~3400-3300cm-1?

alcohol

<p>alcohol</p>

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2

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

3200-3600

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3

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

2200-3600

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4

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

3350-3500

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5

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

~3300

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6

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

3000-3100

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7

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

2850-3000

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8

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

2750-2850

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9

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

2100-2200

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10

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

2200-2300

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11

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1750-1850

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12

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1700-1750

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13

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1700-1750

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14

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1680-1750

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15

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1650-1700

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16

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1600-1700

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17

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1450-1600, 1650-2000

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18

<p>What produces 2 medium peaks at a frequency of ~3400-3200cm-1?</p>

What produces 2 medium peaks at a frequency of ~3400-3200cm-1?

primary amine

<p>primary amine</p>

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19

<p>What produces 1 weak peak at a frequency of ~3400-3200cm-1?</p>

What produces 1 weak peak at a frequency of ~3400-3200cm-1?

secondary amine

<p>secondary amine</p>

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20

<p>What produces a strong and very broad signal at 3500-2400cm-1?</p>

What produces a strong and very broad signal at 3500-2400cm-1?

carboxylic acid

<p>carboxylic acid</p>

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21

<p>What produces a strong, sharp signal at ~3300cm-1?</p>

What produces a strong, sharp signal at ~3300cm-1?

alkyne C-H

<p>alkyne C-H</p>

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22

<p>What produces a medium to weak signal just above 3000cm-1?</p>

What produces a medium to weak signal just above 3000cm-1?

unsaturated C-H

<p>unsaturated C-H</p>

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23

<p>What produces a strong signal just below 3000cm-1?</p>

What produces a strong signal just below 3000cm-1?

saturated C-H

<p>saturated C-H</p>

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24

<p>What produces a pair of medium to weak signals at 2900-2800 and 2800-2700?</p>

What produces a pair of medium to weak signals at 2900-2800 and 2800-2700?

aldehyde

<p>aldehyde</p>

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25

<p>What produces a medium, sharp signal at 2260-2220cm-1?</p>

What produces a medium, sharp signal at 2260-2220cm-1?

nitrile

<p>nitrile</p>

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26

<p>What produces a medium, sharp signal at 2260-2100cm-1?</p>

What produces a medium, sharp signal at 2260-2100cm-1?

alkyne (Don’t confuse with alkyne attached to H!)

<p>alkyne (Don’t confuse with alkyne attached to H!)</p>

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27

<p>What has a strong signal at ~2160-2120cm-1?</p>

What has a strong signal at ~2160-2120cm-1?

azide (N3)

<p>azide (N3)</p>

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28

<p>What has a strong signal at ~1700cm-1?</p>

What has a strong signal at ~1700cm-1?

carbonyl

<p>carbonyl</p>

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29

<p>What is the frequency range for the signal produced by this carbonyl?</p>

What is the frequency range for the signal produced by this carbonyl?

~1750-1700cm-1

<p>~1750-1700cm-1</p>

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30

<p>What is the frequency range for the signal produced by this carbonyl?</p>

What is the frequency range for the signal produced by this carbonyl?

~1750-1680cm-1

<p>~1750-1680cm-1</p>

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31

<p>What is the frequency range for the signal produced by this carbonyl?</p>

What is the frequency range for the signal produced by this carbonyl?

~1700-1650cm-1

<p>~1700-1650cm-1</p>

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32

<p>What produces a medium to weak signal at ~1700-1600cm-1?</p>

What produces a medium to weak signal at ~1700-1600cm-1?

alkene

<p>alkene</p>

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33

<p>What produces a pair of strong to medium signals at ~1600 & 1475cm-1?</p>

What produces a pair of strong to medium signals at ~1600 & 1475cm-1?

benzene

<p>benzene</p>

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34

<p>What produces a pair of strong to medium signals at ~1550 & 1350cm-1?</p>

What produces a pair of strong to medium signals at ~1550 & 1350cm-1?

nitro (NO2)

<p>nitro (NO2)</p>

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35

<p>What produces a strong to medium signal at ~1250-1000cm-1 with “shouldering”?</p>

What produces a strong to medium signal at ~1250-1000cm-1 with “shouldering”?

C-O single bond

<p>C-O single bond</p>

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36

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

600-800

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37

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

500-600

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38

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1000-1100

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39

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1250-1350

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40

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1000-1200

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41

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

900-920, 980-100

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42

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

880-900

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43

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1370, 1380

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44

<p>At what frequency is the signal for this structural unit found?</p>

At what frequency is the signal for this structural unit found?

1370, 1390

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