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C-13 NMR Spectroscopy CHM 320 La Salle University.

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Presentation on theme: "C-13 NMR Spectroscopy CHM 320 La Salle University."— Presentation transcript:

1 C-13 NMR Spectroscopy CHM 320 La Salle University

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5 C-13 Spectrum of m-Nitroacetophenone

6 1H NMR Spectrum of Ethylbenzene

7 Typical ppm (  )  Ranges in C-13 NMR

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11 Relaxation Times

12 Coupling Constants are Large J Values measured in Hz

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23 Silverstein, p. 212

24 Silverstein, p. 215

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28 Predicting Chemical Shifts

29 Predicted Chemical Shifts of C a and C b

30 2,2,4-Trimethylpentane  53.28, 31.10, 30.16, 25.51, 24.73

31 Chemical Shift Prediction with Functional Groups

32 Use Base Value From Table 4.5

33 You can Choose Which Base Value from Table 4.5 to Use

34 Spectrum at 75 MHz and 150 MHz


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