What is the chemical shift of the indicated proton of trans-cinnamic acid in the in the ¹H NMR spectrum (see the spectrum in your on page 7 of the handout for the NBS Lab)? Hint: the peak will have a diagnostic coupling constant and conjugation plays a significant role. O 6.45 ppm 07.51 ppm O 7.71 ppm 07.33 ppm 12 ppm H OH

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What is the chemical shift of the indicated proton of trans-cinnamic acid in the in the ¹H NMR
spectrum (see the spectrum in your on page 7 of the handout for the NBS Lab)? Hint: the peak will
have a diagnostic coupling constant and conjugation plays a significant role.
O 6.45 ppm
7.51 ppm
E
O 7.33 ppm
O 7.71 ppm
12 ppm
H
OH
Transcribed Image Text:What is the chemical shift of the indicated proton of trans-cinnamic acid in the in the ¹H NMR spectrum (see the spectrum in your on page 7 of the handout for the NBS Lab)? Hint: the peak will have a diagnostic coupling constant and conjugation plays a significant role. O 6.45 ppm 7.51 ppm E O 7.33 ppm O 7.71 ppm 12 ppm H OH
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