NMR Practice: C4H10O

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NMR Practice C4H10O
Given a molecular formula and an NMR spectrum,
what is the structure of the compound?
3 H
2 H
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NMR Practice C6H12O2
ratio 1 3.0
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NMR C4H8O2
3 H
2 H
3 H
q
t
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Common Patters for Proton NMR

• 1. triplet (3H) quartet (2H)
• 2. large double (6H) muliplet
• 3. large singlet (9H), 1 ppm
• 4. multiplet 7.2 ppm (4-5H)
• 5. singlet 3.5 ppm (3H)
• 6. singlet 2.1 ppm (3H)

ethyl group isopropyl t-butyl group aromatic ring
-OCH3 group H3C-CO (methyl ketone)
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NMR Spectrometer - schematic
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C4H7ClO2
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NMR C10H14
6 H d
4 H m
3 H s
1 H m
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(No Transcript)
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1H NMR C6H12
10
1H NMR C5H12O
(doublet)
br
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1H NMR C5H10O
12
1H NMR C9H10
3 H doublet J 8 Hz
11 Hz
2H
3H
1H 1H