Student Answer Key

Student Answer Key - Chemistry 3AL NMR Worksheet #1 Answer...

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Chemistry 3AL NMR Worksheet #1 Answer Key 1. Sketch the 1 H NMR and 13 C[ 1 H] NMR spectra of each molecule. For all spectra, chemical shifts must be correct relative to each other. That is, you do not need to assign ppm values to any resonance. In the 1 H NMR spectra draw any multiplets accurately. If there are any resonances in the same chemical shift region, be sure to separate them enough so that they are distinguishable. For each spectrum assign all hydrogen or carbon atoms to the corresponding resonances. Please note that I have shown actual ppm values, but only relative chemical shifts were necessary (i.e. no ppm values). Br Cl 0 1 2 3 4 PPM 0 5 10 15 20 25 30 35 40 45 PPM A B B A Br Cl H A H A H B H B H A H B 1 point 1 point
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O A C D E (H A ) 3 C O C(H D ) 3 (H A ) 3 C (H A ) 3 C A A B H C H C H B H B 0 1 2 3 4 PPM H A H B H C H D 0 10 20 30 40 50 60 70 PPM A B C D E The singlet can be place to the left of the triplet for full credit.
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Student Answer Key - Chemistry 3AL NMR Worksheet #1 Answer...

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