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NMR Practice: C 4 H 10 O

NMR Practice: C 4 H 10 O. Given a molecular formula and an NMR spectrum, what is the structure of the compound?. 3 H. 2 H. integral. NMR Practice – C 6 H 12 O 2. ratio 1 : 3.0. NMR : C 4 H 8 O 2. 3 H. 2 H. 3 H. q. t. Common Patters for Proton NMR.

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NMR Practice: C 4 H 10 O

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  1. NMR Practice: C4H10O Given a molecular formula and an NMR spectrum, what is the structure of the compound? 3 H 2 H

  2. integral NMR Practice – C6H12O2 ratio 1 : 3.0

  3. NMR : C4H8O2 3 H 2 H 3 H q t

  4. 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-C=O (methyl ketone)

  5. NMR Spectrometer - schematic

  6. C4H7ClO2

  7. NMR : C10H14 6 H d 4 H m 3 H s 1 H m

  8. 1H NMR : C6H12

  9. 1H NMR : C5H12O (doublet) br

  10. 1H NMR : C5H10O

  11. 1H NMR : C9H10 3 H doublet J = 8 Hz 11 Hz 2H 3H 1H 1H

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