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1 H NMR Spectroscopy Advanced Topics. Fourier Transformation.

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Presentation on theme: "1 H NMR Spectroscopy Advanced Topics. Fourier Transformation."— Presentation transcript:

1 1 H NMR Spectroscopy Advanced Topics

2 Fourier Transformation

3 Ferromagnetic Impurity (above)

4 300 vs. 600 MHz

5 Induced Fields

6 Benzene Deshielding

7 Carbonyl Deshielding

8 Alkyne Shielding

9

10 cis or trans? Look at J value for vinyl doublets

11  - and  -Glucopyranose

12 First-Order Doublets  /J > 8

13 Non First-Order Doublets  /J = 2

14  coupling  J in Hz

15 Butanal

16 Styrene

17 Allyl Alcohol

18 Cumene

19 Methine H in Isopropyl Group a quartet of quartets

20 qq results in 7 lines

21 Triplet of triplets (J = 10; J = 5) Intensity Ratios are Different

22 dqd (J = 12; J = 7; J = 4)

23

24

25

26

27

28 Quartet at  25.0, 300 MHz each ppm is 75 Hz

29  22.0 (q, J=150),  25.0 (q, J=150) (at 300 MHz)

30 At 600 MHz…


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