Nuclear Magnetic Resonance (NMR) Spectroscopy

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Nuclear Magnetic Resonance (NMR) Spectroscopy
Identify the environment of hydrogen and
carbon atoms
Identify atom connectivity
Identify stereochemical relationships
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An NMR Spectrometer
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1H NMR of Acetone
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1H NMR of Methyl Acetate
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Electron Density Maps
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Electron Shielding
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1H NMR of Methyl Acetate
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1H NMR of Ethyl Acetate
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3
2
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A Splitting Diagram for a Doublet of Doublets
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The Difference between a Quartet and a Doublet
of Doublets
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Diamagnetic Anisotropy
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Dry, ultra-pure ethanol
Ethanol with trace acid
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Common NMR Shifts
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Common NMR Shifts
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Putting It All Together
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Putting It All Together
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Putting It All Together
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Four Similar Unknowns
Molecular Ion 74 C4H10O
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Unknown 1
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1
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Unknown 2
6
2
1
1
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Unknown 3
3
2
1
4
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Unknown 4
1
7
2
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Common 13C Chemical Shifts
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Proton Decoupling
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13C NMR of Ethyl Acetate
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13C NMR of Ethyl Acetate
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Can we identify this compound?
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Can we identify this compound?
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Can we identify this compound?
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2
1
1
1
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Can we identify this compound?
86
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62
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